Automatic merge from submit-queue (batch tested with PRs 60710, 60855, 60873, 60895, 60862). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Bugfix for erroneous upgrade needed messaging in kubernetes worker charm.

**What this PR does / why we need it**: Bugfix for erroneous upgrade needed messaging in kubernetes worker charm.

**Release note**:
```release-note
Bugfix for erroneous upgrade needed messaging in kubernetes worker charm.
```