build(deps): bump crazy-max/ghaction-import-gpg from 6.3.0 to 7.0.0 (#658)

Bumps [crazy-max/ghaction-import-gpg](https://github.com/crazy-max/ghaction-import-gpg) from 6.3.0 to 7.0.0.
- [Release notes](https://github.com/crazy-max/ghaction-import-gpg/releases)
- [Commits](crazy-max/ghaction-import-gpg@v6.3.0...v7.0.0)

---
updated-dependencies:
- dependency-name: crazy-max/ghaction-import-gpg
  dependency-version: 7.0.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Steve Ramage <49958178+steve-r-west@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/release.yml

@@ -34,7 +34,7 @@ jobs:
       -
         name: Import GPG key
         id: import_gpg
-        uses: crazy-max/ghaction-import-gpg@v6.3.0
+        uses: crazy-max/ghaction-import-gpg@v7.0.0
         with:
           # These secrets will need to be configured for the repository:
           gpg_private_key: ${{ secrets.GPG_PRIVATE_KEY }}