Merge pull request #151 from ruby/dependabot/github_actions/step-security/harden-runner-2.20.1

Bump step-security/harden-runner from 2.20.0 to 2.20.1

Author: shugo

.github/workflows/push_gem.yml

@@ -24,7 +24,7 @@ jobs:
     steps:
       # Set up
       - name: Harden Runner
-        uses: step-security/harden-runner@bf7454d06d71f1098171f2acdf0cd4708d7b5920 # v2.20.0
+        uses: step-security/harden-runner@b09bb98e06d4d774595224525879c09bc6e98c40 # v2.20.1
         with:
           egress-policy: audit