Bump crazy-max/ghaction-import-gpg from 5.4.0 to 6.0.0 (#159)

Bumps [crazy-max/ghaction-import-gpg](https://github.com/crazy-max/ghaction-import-gpg) from 5.4.0 to 6.0.0.
- [Release notes](https://github.com/crazy-max/ghaction-import-gpg/releases)
- [Commits](crazy-max/ghaction-import-gpg@d6f3f49...82a020f)

---
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>

.github/workflows/release.yml

@@ -31,7 +31,7 @@ jobs:
           cache: true
       -
         name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@d6f3f49f3345e29369fe57596a3ca8f94c4d2ca7 # v5.4.0
+        uses: crazy-max/ghaction-import-gpg@82a020f1f7f605c65dd2449b392a52c3fcfef7ef # v6.0.0
         id: import_gpg
         with:
           gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}