.github: drop step security

Signed-off-by: Christian Stewart <christian@aperture.us>

Author: paralin

.github/workflows/dependency-review.yml

@@ -14,11 +14,6 @@ jobs:
   dependency-review:
     runs-on: ubuntu-latest
     steps:
-      - name: Harden Runner
-        uses: step-security/harden-runner@f4a75cfd619ee5ce8d5b864b0d183aff3c69b55a # v2.13.1
-        with:
-          egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
-
       - name: 'Checkout Repository'
         uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0
       - name: 'Dependency Review'