Bump webfactory/ssh-agent from 0.4.1 to 0.5.4 (#984)

Bumps [webfactory/ssh-agent](https://github.com/webfactory/ssh-agent) from 0.4.1 to 0.5.4.
- [Release notes](https://github.com/webfactory/ssh-agent/releases)
- [Changelog](https://github.com/webfactory/ssh-agent/blob/master/CHANGELOG.md)
- [Commits](https://github.com/webfactory/ssh-agent/compare/v0.4.1...v0.5.4)

---
updated-dependencies:
- dependency-name: webfactory/ssh-agent
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/integration.yml

@@ -152,7 +152,7 @@ jobs:
           persist-credentials: false
 
       - name: Install SSH Client
-        uses: webfactory/ssh-agent@v0.4.1
+        uses: webfactory/ssh-agent@v0.5.4
         with:
           ssh-private-key: ${{ secrets.DEPLOY_KEY }}