Bump webfactory/ssh-agent from 0.9.1 to 0.10.0

Bumps [webfactory/ssh-agent](https://github.com/webfactory/ssh-agent) from 0.9.1 to 0.10.0.
- [Release notes](https://github.com/webfactory/ssh-agent/releases)
- [Changelog](https://github.com/webfactory/ssh-agent/blob/master/CHANGELOG.md)
- [Commits](webfactory/ssh-agent@a6f90b1...e838748)

---
updated-dependencies:
- dependency-name: webfactory/ssh-agent
  dependency-version: 0.10.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

.github/workflows/release.yml

@@ -136,7 +136,7 @@ jobs:
           token: ${{ secrets.DOCS_PAT }}
           path: './docs'
       - name: Setup bot SSH signing key
-        uses: webfactory/ssh-agent@a6f90b1f127823b31d4d4a8d96047790581349bd # v0.9.1
+        uses: webfactory/ssh-agent@e83874834305fe9a4a2997156cb26c5de65a8555 # v0.10.0
         env:
           HAS_SSH_PRIVATE_KEY: ${{ secrets.STEP_TRAVIS_CI_GH_PRIVATE_SIGNING_KEY != '' }}
         if: ${{ env.HAS_SSH_PRIVATE_KEY == 'true' }}