Merge pull request #1104 from simplecov-ruby/dependabot/github_actions/step-security/harden-runner-2.9.1

Bump step-security/harden-runner from 2.8.1 to 2.9.1

Author: amatsuda

.github/workflows/push_gem.yml

@@ -22,7 +22,7 @@ jobs:
     steps:
       # Set up
       - name: Harden Runner
-        uses: step-security/harden-runner@17d0e2bd7d51742c71671bd19fa12bdc9d40a3d6 # v2.8.1
+        uses: step-security/harden-runner@5c7944e73c4c2a096b17a9cb74d65b6c2bbafbde # v2.9.1
         with:
           egress-policy: audit