Merge pull request #100 from sue445/dependabot/github_actions/step-security/harden-runner-2.19.4

Bump step-security/harden-runner from 2.19.0 to 2.19.4

Author: sue445-bot[bot]

.github/workflows/release_gem.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@8d3c67de8e2fe68ef647c8db1e6a09f647780f40 # v2.19.0
+        uses: step-security/harden-runner@9af89fc71515a100421586dfdb3dc9c984fbf411 # v2.19.4
         with:
           egress-policy: audit