chore(deps): bump crazy-max/ghaction-import-gpg from 3.1.0 to 4

Bumps [crazy-max/ghaction-import-gpg](https://github.com/crazy-max/ghaction-import-gpg) from 3.1.0 to 4.
- [Release notes](https://github.com/crazy-max/ghaction-import-gpg/releases)
- [Changelog](https://github.com/crazy-max/ghaction-import-gpg/blob/master/CHANGELOG.md)
- [Commits](crazy-max/ghaction-import-gpg@v3.1.0...v4)

---
updated-dependencies:
- dependency-name: crazy-max/ghaction-import-gpg
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/build.yml

@@ -49,7 +49,7 @@ jobs:
 
       - name: Prepare GPG environment
         # https://github.com/crazy-max/ghaction-import-gpg
-        uses: crazy-max/ghaction-import-gpg@v3.1.0
+        uses: crazy-max/ghaction-import-gpg@v4
         if: github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/tags/')
         with:
           gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}