chore(deps): bump webfactory/ssh-agent from 0.9.0 to 0.9.1

Bumps [webfactory/ssh-agent](https://github.com/webfactory/ssh-agent) from 0.9.0 to 0.9.1.
- [Release notes](https://github.com/webfactory/ssh-agent/releases)
- [Changelog](https://github.com/webfactory/ssh-agent/blob/master/CHANGELOG.md)
- [Commits](webfactory/ssh-agent@v0.9.0...v0.9.1)

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

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

Author: dependabot[bot]

.github/workflows/sync-mirror.yml

@@ -8,7 +8,7 @@ jobs:
     if: github.repository == 'djmaxus/matlab-repo-init'
     runs-on: ubuntu-latest
     steps:
-      - uses: webfactory/ssh-agent@v0.9.0
+      - uses: webfactory/ssh-agent@v0.9.1
         with:
           ssh-private-key: ${{ secrets.MATLAB_TEMPLATE_MIRROR_SSH_PRIVATE_KEY }}
       - name: Push changes to ImperialCollegeLondon/matlab-repo-init