feat(security): security best practices from StepSecurity (#11937)

Signed-off-by: StepSecurity Bot <bot@stepsecurity.io>
Co-authored-by: stepsecurity-app[bot] <188008098+stepsecurity-app[bot]@users.noreply.github.com>
Co-authored-by: Pepe Fagoaga <pepe@prowler.com>

.github/workflows/markdown-lint.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@fa2e9d605c4eeb9fcad4c99c224cee0c6c7f3594 # v2.16.0
+        uses: step-security/harden-runner@bf7454d06d71f1098171f2acdf0cd4708d7b5920 # v2.20.0
         with:
           egress-policy: block
           allowed-endpoints: >