[NX Release] Allow pushing tags when nothing to commit

[roman-supy-io]

Currently when the following options are set githCommit: false and stageChanges: false for both Changelog and Version steps, even though the git tags get created, they will not be pushed.

I'm not sure if it's a bug or intended but that is not right.

There are cases like ours, where we rely on git tags but we do not update version and changelog.
So in this case we can of course manually push the tags but that's part of work that nx release should be doing.