Bump crazy-max/ghaction-import-gpg from 5.3.0 to 6.0.0 (#321)

Bumps [crazy-max/ghaction-import-gpg](https://github.com/crazy-max/ghaction-import-gpg) from 5.3.0 to 6.0.0.
- [Release notes](https://github.com/crazy-max/ghaction-import-gpg/releases)
- [Commits](crazy-max/ghaction-import-gpg@v5.3.0...v6.0.0)

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -37,7 +37,7 @@ jobs:
           cache: maven
       - name: Import GPG key
         id: import_gpg
-        uses: crazy-max/ghaction-import-gpg@v5.3.0
+        uses: crazy-max/ghaction-import-gpg@v6.0.0
         with:
           gpg_private_key: ${{ secrets.GPG_SIGNING_KEY }}
           passphrase: ${{ secrets.GPG_PASSPHRASE }}