* Forces the AL2 build container image for fixtures that depend on it,
via `engines.node` in package.json for most cases.
* The `testDeployment()` function was updated to send
`projectSettings.nodeVersion` in the POST body, to mimic the behavior in
CLI.
* For Go, Ruby, and Python tests, the `projectSettings.nodeVersion`
property is set "globally" in the Jest setup file, so that individual
fixtures didn't need to be adjusted.
These tests will run if one of the conditions is met:
- any change to `./examples`
- any changes to `./packages/frameworks`
The test ensures that examples can build and deploy without errors.
In a future PR, we could improve these tests to make requests to the
test deployment (like we do for probes).