Request increase in required GCP project quotas for large runner machine projects

For each GCP project we create in the [create projects issue](https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/16089) we also need to request quota increases for the "usual things".

Basing on the [recent work](https://gitlab.com/gitlab-com/gl-infra/capacity-planning/-/issues/30) done for `private` runners and assuming that we will handle the same maximum capacity per the GCP project as in `shared` and `private` runners case, we will definitely need to request upgrades for:

- **Read requests per minute** - 4500 (from the default 1500)
- **Heavy-weight read requests per minute** - 2250 (from the default 750)

We will also need to increase the `CPUs` quota. The default limit is 2400 and with bigger machine types we will use definitely more. Assuming that the maximum number of VMs we will handle in each GCP project will be 1500, we will need to request:

- 3000 for the `saas-linux-medium` shard (using the `n1-standard-2` machine type which has 2 vCPUs)
- 6000 for the `saas-linux-large` shard (using the `n1-standard-4` machine type which has 4 vCPUs)

There was a discussion whether we should use `n2d` machines instead of `n1`. Currently the decision seem to be to stay with `n1`.

But if we will decide to use `n2d` we will also need to increase the `N2D CPUs` - the value would be same as for the `CPUs` one (as id depends on the estimated maximum number of hosted VMs x number of CPUs per VM).

## Plan checklist

- [x] Request quota limits increases
    - [x] `gitlab-r-saas-l-m-amd64-1`

        ```
        Thank you for submitting Case # (ID:12bee97039bb48b28a06c087d467547e) to Google Cloud Platform support for the following quotas:
        Change CPUs - us-east1 from 2,400 to 3,000
        Change N2D CPUs - us-east1 from 500 to 3,000
        Change Heavy-weight read requests per minute from 750 to 2,250
        Change Read requests per minute from 1,500 to 4,500
        ```

    - [x] `gitlab-r-saas-l-m-amd64-2`

        ```
        Thank you for submitting Case # (ID:842fbbcf476147dda093a1df763c4da5) to Google Cloud Platform support for the following quotas:
        Change CPUs - us-east1 from 2,400 to 3,000
        Change N2D CPUs - us-east1 from 500 to 3,000
        Change Heavy-weight read requests per minute from 750 to 2,250
        Change Read requests per minute from 1,500 to 4,500
        ```

    - [x] `gitlab-r-saas-l-m-amd64-3`

        ```
        Thank you for submitting Case # (ID:35c99197a5a143ec883c26aceaab15b3) to Google Cloud Platform support for the following quotas:
        Change CPUs - us-east1 from 2,400 to 3,000
        Change N2D CPUs - us-east1 from 500 to 3,000
        Change Heavy-weight read requests per minute from 750 to 2,250
        Change Read requests per minute from 1,500 to 4,500
        ```

    - [x] `gitlab-r-saas-l-m-amd64-4`

        ```
        Thank you for submitting Case # (ID:bf7d29f5201c49b4b6d1140650e953d5) to Google Cloud Platform support for the following quotas:
        Change CPUs - us-east1 from 2,400 to 3,000
        Change N2D CPUs - us-east1 from 500 to 3,000
        Change Heavy-weight read requests per minute from 750 to 2,250
        Change Read requests per minute from 1,500 to 4,500
        ```

    - [x] `gitlab-r-saas-l-m-amd64-5`

        ```
        Thank you for submitting Case # (ID:606d548097904ce3bcb8d7a525b057ac) to Google Cloud Platform support for the following quotas:
        Change CPUs - us-east1 from 2,400 to 3,000
        Change N2D CPUs - us-east1 from 500 to 3,000
        Change Heavy-weight read requests per minute from 750 to 2,250
        Change Read requests per minute from 1,500 to 4,500
        ```

    - [x] `gitlab-r-saas-l-l-amd64-1`

        ```
        Thank you for submitting Case # (ID:3de48d3fd05e415abca185efa3fa5742) to Google Cloud Platform support for the following quotas:
        Change CPUs - us-east1 from 2,400 to 6,000
        Change N2D CPUs - us-east1 from 500 to 6,000
        Change Heavy-weight read requests per minute from 750 to 2,250
        Change Read requests per minute from 1,500 to 4,500
        ```

    - [x] `gitlab-r-saas-l-l-amd64-2`

        ```
        Thank you for submitting Case # (ID:81e8af60637f490dae4661f9c80fa5cf) to Google Cloud Platform support for the following quotas:
        Change N2D CPUs - us-east1 from 500 to 6,000
        Change CPUs - us-east1 from 2,400 to 6,000
        Change Heavy-weight read requests per minute from 750 to 2,250
        Change Read requests per minute from 1,500 to 4,500
        ```

    - [x] `gitlab-r-saas-l-l-amd64-3`

        ```
        Thank you for submitting Case # (ID:abbf0b50a4ce40fb8c8969beb7c963b2) to Google Cloud Platform support for the following quotas:
        Change N2D CPUs - us-east1 from 500 to 6,000
        Change CPUs - us-east1 from 2,400 to 6,000
        Change Heavy-weight read requests per minute from 750 to 2,250
        Change Read requests per minute from 1,500 to 4,500
        ```

    - [x] `gitlab-r-saas-l-l-amd64-4`

        ```
        Thank you for submitting Case # (ID:35032f9e334f4a36836daa1ce54ac4e1) to Google Cloud Platform support for the following quotas:
        Change N2D CPUs - us-east1 from 500 to 6,000
        Change CPUs - us-east1 from 2,400 to 6,000
        Change Heavy-weight read requests per minute from 750 to 2,250
        Change Read requests per minute from 1,500 to 4,500
        ```

    - [x] `gitlab-r-saas-l-l-amd64-5`

        ```
        Thank you for submitting Case # (ID:06a1b9e00bf8410aa373693f06c0d117) to Google Cloud Platform support for the following quotas:
        Change CPUs - us-east1 from 2,400 to 6,000
        Change N2D CPUs - us-east1 from 500 to 6,000
        Change Heavy-weight read requests per minute from 750 to 2,250
        Change Read requests per minute from 1,500 to 4,500
        ```

- [x] Confirm that quota limits were increased
    - [x] `gitlab-r-saas-l-m-amd64-1`
    - [x] `gitlab-r-saas-l-m-amd64-2`
    - [x] `gitlab-r-saas-l-m-amd64-3`
    - [x] `gitlab-r-saas-l-m-amd64-4`
    - [x] `gitlab-r-saas-l-m-amd64-5`
    - [x] `gitlab-r-saas-l-l-amd64-1`
    - [x] `gitlab-r-saas-l-l-amd64-2`
    - [x] `gitlab-r-saas-l-l-amd64-3`
    - [x] `gitlab-r-saas-l-l-amd64-4`
    - [x] `gitlab-r-saas-l-l-amd64-5`

Story points: 0.0