chore: bump GitGuardian/ggshield-action from 1.16.0 to 1.17.2 (#35)

Bumps [GitGuardian/ggshield-action](https://github.com/gitguardian/ggshield-action) from 1.16.0 to 1.17.2.
- [Release notes](https://github.com/gitguardian/ggshield-action/releases)
- [Commits](GitGuardian/ggshield-action@54a6e5a...20ec876)

---
updated-dependencies:
- dependency-name: GitGuardian/ggshield-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/git-guardian.yml

@@ -18,7 +18,7 @@ jobs:
         with:
           fetch-depth: 0 # fetch all history so multiple commits can be scanned
       - name: GitGuardian scan
-        uses: GitGuardian/ggshield-action@54a6e5a89b5828c43de24a71bad2c9a95360ad14 # v1.16.0
+        uses: GitGuardian/ggshield-action@20ec876d80e4e4efc86c8c6b19ecad17e34fabbf # v1.17.2
         env:
           GITHUB_PUSH_BEFORE_SHA: ${{ github.event.before }}
           GITHUB_PUSH_BASE_SHA: ${{ github.event.base }}