chore(deps): update step-security/harden-runner action to v2.15.0

Author: renovate[bot]

.github/workflows/auto-merge-deps.yml

@@ -30,7 +30,7 @@ jobs:
 
         steps:
             - name: Harden Runner
-              uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
+              uses: step-security/harden-runner@a90bcbc6539c36a85cdfeb73f7e2f433735f215b # v2.15.0
               with:
                   egress-policy: audit
 

.github/workflows/pr-quality.yml

@@ -25,7 +25,7 @@ jobs:
 
         steps:
             - name: Harden Runner
-              uses: step-security/harden-runner@5ef0c079ce82195b2a36a210272d6b661572d83e # v2.14.2
+              uses: step-security/harden-runner@a90bcbc6539c36a85cdfeb73f7e2f433735f215b # v2.15.0
               with:
                   egress-policy: audit