Bump MrSquaare/ssh-setup-action from 2 to 3 (#37)

Bumps [MrSquaare/ssh-setup-action](https://github.com/mrsquaare/ssh-setup-action) from 2 to 3.
- [Release notes](https://github.com/mrsquaare/ssh-setup-action/releases)
- [Commits](MrSquaare/ssh-setup-action@v2...v3)

---
updated-dependencies:
- dependency-name: MrSquaare/ssh-setup-action
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/main.yml

@@ -36,7 +36,7 @@ jobs:
         ref: 'gh-pages'
         path: pyvista-tutorial-ja
     - name: Setup SSH
-      uses: MrSquaare/ssh-setup-action@v2
+      uses: MrSquaare/ssh-setup-action@v3
       with:
         host: github.com
         private-key: ${{ secrets.SSH_PRIVATE_KEY }}