Bump nick-fields/retry from 2.7.0 to 2.8.1

Bumps [nick-fields/retry](https://github.com/nick-fields/retry) from 2.7.0 to 2.8.1.
- [Release notes](https://github.com/nick-fields/retry/releases)
- [Changelog](https://github.com/nick-fields/retry/blob/master/.releaserc.js)
- [Commits](nick-fields/retry@v2.7.0...v2.8.1)

---
updated-dependencies:
- dependency-name: nick-fields/retry
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/run-tests.yml

@@ -44,7 +44,7 @@ jobs:
           sudo apt-get update
 
       - name: Run Mobile Robot Tests
-        uses: nick-fields/retry@v2.7.0
+        uses: nick-fields/retry@v2.8.1
         with:
           timeout_minutes: 45
           max_attempts: 3