Bump bobg/modver from 2.12.0 to 2.12.1 in the github-actions group

Bumps the github-actions group with 1 update: [bobg/modver](https://github.com/bobg/modver).


Updates `bobg/modver` from 2.12.0 to 2.12.1
- [Release notes](https://github.com/bobg/modver/releases)
- [Commits](bobg/modver@v2.12.0...v2.12.1)

---
updated-dependencies:
- dependency-name: bobg/modver
  dependency-version: 2.12.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/go.yml

@@ -47,7 +47,7 @@ jobs:
             go-version: "stable"
 
         - name: Modver
-          uses: bobg/modver@v2.12.0
+          uses: bobg/modver@v2.12.1
           with:
             github_token: ${{ secrets.GITHUB_TOKEN }}
             pull_request_url: https://github.com/${{ github.repository }}/pull/${{ github.event.number }}