Blog post: YAML tips for CI/CD (July 6)

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## Proposal

Our first blog post about YAML tricks to speed up pipelines was so popular we're thinking of doing a follow-up post that explores different tips for developers on how to use YAML for CI/CD. @cbuchanan @dnsmichi do you have any ideas for team members who might know a lot about this topic that can write a blog post or can be interviewed? 

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| Person | Role |
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Story points: 3.0