Bump scala-steward-org/scala-steward-action from 2.66.0 to 2.68.0

Bumps [scala-steward-org/scala-steward-action](https://github.com/scala-steward-org/scala-steward-action) from 2.66.0 to 2.68.0.
- [Release notes](https://github.com/scala-steward-org/scala-steward-action/releases)
- [Commits](scala-steward-org/scala-steward-action@v2.66.0...v2.68.0)

---
updated-dependencies:
- dependency-name: scala-steward-org/scala-steward-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

.github/workflows/scala-steward.yml

@@ -17,7 +17,7 @@ jobs:
         app_id: 89698
         private_key: ${{ secrets.UNFILTERED_APP_KEY }}
     - name: Launch Scala Steward
-      uses: scala-steward-org/scala-steward-action@v2.66.0
+      uses: scala-steward-org/scala-steward-action@v2.68.0
       with:
         github-token: ${{ steps.generate_token.outputs.token }}
         author-email: "74865306+unfiltered-app[bot]@users.noreply.github.com"