Bump step-security/harden-runner from 2.2.0 to 2.7.1

Bumps [step-security/harden-runner](https://github.com/step-security/harden-runner) from 2.2.0 to 2.7.1.
- [Release notes](https://github.com/step-security/harden-runner/releases)
- [Commits](step-security/harden-runner@c8454ef...a4aa98b)

---
updated-dependencies:
- dependency-name: step-security/harden-runner
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/arduino.yml

@@ -95,7 +95,7 @@ jobs:
     steps:
 
       - name: Harden Runner
-        uses: step-security/harden-runner@c8454efe5d0bdefd25384362fe217428ca277d57
+        uses: step-security/harden-runner@a4aa98b93cab29d9b1101a6143fb8bce00e2eac4
         with:
           egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
           disable-telemetry: true # disables telemetry sent to StepSecurity when egress policy is set to 'block'

.github/workflows/report_deltas.yml

@@ -20,7 +20,7 @@ jobs:
 
     steps:
       - name: Harden Runner
-        uses: step-security/harden-runner@c8454efe5d0bdefd25384362fe217428ca277d57
+        uses: step-security/harden-runner@a4aa98b93cab29d9b1101a6143fb8bce00e2eac4
         with:
           egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs
 

.github/workflows/stale.yml

@@ -23,7 +23,7 @@ jobs:
 
     steps:
     - name: Harden Runner
-      uses: step-security/harden-runner@c8454efe5d0bdefd25384362fe217428ca277d57
+      uses: step-security/harden-runner@a4aa98b93cab29d9b1101a6143fb8bce00e2eac4
       with:
         egress-policy: audit # TODO: change to 'egress-policy: block' after couple of runs