Fix TwigBundle dependencies

| Q             | A
| ------------- | ---
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets | 
| License       | MIT
| Doc PR        | 

Twig depends on FrameworkBundle and the Finder component.
The dependency on FrameworkBundle pulls in what used to be development dependencies, so that could be removed.