[2.7.x] Make sure Sonatype plugin does not override Common settings (backport #621) by @mkurz

[mergify]

• Fixes Sonatype publication #620
• Details: Sonatype publication #620 (comment)

  ---

  This is an automatic backport of pull request Make sure Sonatype plugin does not override Common settings #621 done by Mergify.

[mergify]

Cherry-pick of a8ec4dc has failed:

On branch mergify/bp/2.7.x/pr-621
Your branch is up to date with 'origin/2.7.x'.

You are currently cherry-picking commit a8ec4dc.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   project/Common.scala

no changes added to commit (use "git add" and/or "git commit -a")

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally