build(deps): bump crazy-max/ghaction-import-gpg from 6 to 7

Bumps [crazy-max/ghaction-import-gpg](https://github.com/crazy-max/ghaction-import-gpg) from 6 to 7.
- [Release notes](https://github.com/crazy-max/ghaction-import-gpg/releases)
- [Commits](https://github.com/crazy-max/ghaction-import-gpg/compare/v6...v7)

---
updated-dependencies:
- dependency-name: crazy-max/ghaction-import-gpg
  dependency-version: '7'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build-quickgui.yml

@@ -74,7 +74,7 @@ jobs:
       - name: Build artifacts 🏗️
         run: flutter build linux --release
       - 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 }}
           passphrase: ${{ secrets.PPA_GPG_PASSPHRASE }}

.github/workflows/publish-quickgui.yml

@@ -135,7 +135,7 @@ jobs:
       - name: Build artifacts 🏗️
         run: flutter build linux --release
       - 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 }}
           passphrase: ${{ secrets.PPA_GPG_PASSPHRASE }}