Fix dependencies + pom building

[l-trotta]

Multiple fixes for gradle build:

• Adds back the commons-logging dependency (previously transitive from rest-client)
• Removes code that synchronized the rest-client version (no longer needed)
• Updates rest-client (optional) version to current minor version (9.0.0)
• Updates httpclient5 dependency from 5.4 to 5.4.4 because of a security issue

[github-actions]

The backport to 9.0 failed:

The process '/usr/bin/git' failed with exit code 1 

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub git fetch # Create a new working tree git worktree add .worktrees/backport-9.0 9.0 # Navigate to the new working tree cd .worktrees/backport-9.0 # Create a new branch git switch --create backport-1010-to-9.0 # Cherry-pick the merged commit of this pull request and resolve the conflicts git cherry-pick --mainline 1 00676a8e041d5d64d90ca9e5289739754c571126 # Push it to GitHub git push --set-upstream origin backport-1010-to-9.0 # Go back to the original working tree cd ../.. # Delete the working tree git worktree remove .worktrees/backport-9.0

Then, create a pull request where the base branch is 9.0 and the compare/head branch is backport-1010-to-9.0.