chore(deps): update crazy-max/ghaction-import-gpg action to v7 (#9787)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/build_debian_src.yml

@@ -42,7 +42,7 @@ jobs:
           sudo mk-build-deps --install --remove --tool='apt-get -o Debug::pkgProblemResolver=yes --no-install-recommends --yes' debian/control
 
       - name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@v6
+        uses: crazy-max/ghaction-import-gpg@v7
         with:
           gpg_private_key: ${{ secrets.PPA_GPG_PRIVATE_KEY }}
         id: gpg

.github/workflows/package_ppa.yml

@@ -46,7 +46,7 @@ jobs:
           sudo apt-get install -y dput
 
       - name: Import GPG key
-        uses: crazy-max/ghaction-import-gpg@v6
+        uses: crazy-max/ghaction-import-gpg@v7
         with:
           gpg_private_key: ${{ secrets.PPA_GPG_PRIVATE_KEY }}
         id: gpg