Bump crazy-max/ghaction-import-gpg from 3 to 6

Bumps [crazy-max/ghaction-import-gpg](https://github.com/crazy-max/ghaction-import-gpg) from 3 to 6.
- [Release notes](https://github.com/crazy-max/ghaction-import-gpg/releases)
- [Commits](crazy-max/ghaction-import-gpg@v3...v6)

---
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-release-vpnc-deployer.yml

@@ -57,7 +57,7 @@ jobs:
           token: ${{ secrets.BEEIO_CI_TOKEN }}
 
       - name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@v3
+        uses: crazy-max/ghaction-import-gpg@v6
         with:
           git-user-signingkey: true
           git-commit-gpgsign: true

.github/workflows/build-release-vpnc.yml

@@ -60,7 +60,7 @@ jobs:
           token: ${{ secrets.BEEIO_CI_TOKEN }}
 
       - name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@v3
+        uses: crazy-max/ghaction-import-gpg@v6
         with:
           git-user-signingkey: true
           git-commit-gpgsign: true

.github/workflows/build-release-vpnddns.yml

@@ -63,7 +63,7 @@ jobs:
           token: ${{ secrets.BEEIO_CI_TOKEN }}
 
       - name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@v3
+        uses: crazy-max/ghaction-import-gpg@v6
         with:
           git-user-signingkey: true
           git-commit-gpgsign: true

.github/workflows/build-release-vpnmanager.yml

@@ -53,7 +53,7 @@ jobs:
           token: ${{ secrets.BEEIO_CI_TOKEN }}
 
       - name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@v3
+        uses: crazy-max/ghaction-import-gpg@v6
         with:
           git-user-signingkey: true
           git-commit-gpgsign: true
@@ -87,7 +87,7 @@ jobs:
 
       - name: Import GPG key
         id: import_gpg
-        uses: crazy-max/ghaction-import-gpg@v3
+        uses: crazy-max/ghaction-import-gpg@v6
         if: needs.context.outputs.shouldPublish == 'true'
         with:
           git-user-signingkey: true