Bump crazy-max/ghaction-import-gpg from 3.2.0 to 4 (#193)

Bumps [crazy-max/ghaction-import-gpg](https://github.com/crazy-max/ghaction-import-gpg) from 3.2.0 to 4.
- [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@v3.2.0...v4)

---
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>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/release.yml

@@ -19,7 +19,7 @@ jobs:
           go-version: 1.16.x
       - name: Import GPG key
         id: import_gpg
-        uses: crazy-max/ghaction-import-gpg@v3.2.0
+        uses: crazy-max/ghaction-import-gpg@v4
         with:
           gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
           passphrase: ${{ secrets.PASSPHRASE }}

.github/workflows/snapshot.yml

@@ -19,7 +19,7 @@ jobs:
           go-version: 1.16.x
       - name: Import GPG key
         id: import_gpg
-        uses: crazy-max/ghaction-import-gpg@v3.2.0
+        uses: crazy-max/ghaction-import-gpg@v4
         with:
           gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
           passphrase: ${{ secrets.PASSPHRASE }}