Bump and test content-api-client preview release version

[Divs-B]

We are testing content-entity latest release that is out after adopting gha-scala-release-process init,
the version is updated in content-api-model and content-api-client so we need to test these libraries preview releases in fapi client too.

The intention is to test all these preview releases in any of client consuming these linbraries, we have apple-news and pubflow for example.

How to test

Make a preview release. test in apple-news

How can we measure success?

Application should compile with no version conflicts between libraries
Application shoud run well without any erros.

[gu-scala-library-release]

@Divs-B has published a preview version of this PR with release workflow run #18, based on commit 53de8b7:

6.0.0-PREVIEW.dbtest-content-api-client-prew-version-bump.2024-03-27T1128.53de8b71

Want to make another preview release?

Click 'Run workflow' in the GitHub UI, specifying the db/test-content-api-client-prew-version-bump branch, or use the GitHub CLI command:

gh workflow run release.yml --ref db/test-content-api-client-prew-version-bump

Want to make a full release after this PR is merged?

Click 'Run workflow' in the GitHub UI, leaving the branch as the default, or use the GitHub CLI command:

gh workflow run release.yml

[Divs-B]

Bumped production release and tested locally via sbt test . tests are passing.

[Divs-B]

Thanks @davidfurey and @rtyley for approving. I will merge and make prod release.
Then we will be all done to use all in apple-news or pubflow or any client using them.