build(deps): bump the github-actions group with 2 updates

Bumps the github-actions group with 2 updates: [actions/cache](https://github.com/actions/cache) and [shimataro/ssh-key-action](https://github.com/shimataro/ssh-key-action).


Updates `actions/cache` from 5.0.3 to 5.0.4
- [Release notes](https://github.com/actions/cache/releases)
- [Changelog](https://github.com/actions/cache/blob/main/RELEASES.md)
- [Commits](cdf6c1fa76...668228422a)

Updates `shimataro/ssh-key-action` from 2.8.0 to 2.8.1
- [Release notes](https://github.com/shimataro/ssh-key-action/releases)
- [Changelog](https://github.com/shimataro/ssh-key-action/blob/v2/CHANGELOG.md)
- [Commits](6b84f2e793...87a8f06711)

---
updated-dependencies:
- dependency-name: actions/cache
  dependency-version: 5.0.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
- dependency-name: shimataro/ssh-key-action
  dependency-version: 2.8.1
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: github-actions
...

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

.github/workflows/go.yml

@@ -32,7 +32,7 @@ jobs:
           go-version: "stable"
 
       - name: Cache playwright binaries
-        uses: actions/cache@cdf6c1fa76f9f475f3d7449005a359c84ca0f306 # v5.0.3
+        uses: actions/cache@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5.0.4
         id: playwright-cache
         with:
           path: |

.github/workflows/ssh-ci.yml

@@ -30,7 +30,7 @@ jobs:
           persist-credentials: false
 
       - name: Install CI target SSH key
-        uses: shimataro/ssh-key-action@6b84f2e793b32fa0b03a379cadadec75cc539391 # v2.8.0
+        uses: shimataro/ssh-key-action@87a8f067114a8ce263df83e9ed5c849953548bc3 # v2.8.1
         with:
           key: ${{ secrets.CI_SSH_KEY }}
           name: id_rsa