fix: bump crazy-max/ghaction-import-gpg from 4 to 5

Bumps [crazy-max/ghaction-import-gpg](https://github.com/crazy-max/ghaction-import-gpg) from 4 to 5.
- [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@v4...v5)

---
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>

action.yml

@@ -34,7 +34,7 @@ runs:
         path: main-repo
         ref: v${{ inputs.current_version }}
     - name: Import GPG key
-      uses: crazy-max/ghaction-import-gpg@v4
+      uses: crazy-max/ghaction-import-gpg@v5
       with:
         gpg_private_key: ${{ inputs.gpg_private_key }}
         passphrase: ${{ inputs.gpg_passphrase }}
@@ -50,7 +50,7 @@ runs:
         ref: main
       name: Checkout the custom tap
     - name: Import GPG key
-      uses: crazy-max/ghaction-import-gpg@v4
+      uses: crazy-max/ghaction-import-gpg@v5
       with:
         gpg_private_key: ${{ inputs.gpg_private_key }}
         passphrase: ${{ inputs.gpg_passphrase }}