build(deps): bump pnpm/action-setup from 3 to 4

Bumps [pnpm/action-setup](https://github.com/pnpm/action-setup) from 3 to 4.
- [Release notes](https://github.com/pnpm/action-setup/releases)
- [Commits](pnpm/action-setup@v3.0.0...v4)

---
updated-dependencies:
- dependency-name: pnpm/action-setup
  dependency-version: '4'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

action.yml

@@ -9,7 +9,7 @@ runs:
     - uses: actions/setup-node@v4
       with:
         node-version: "lts/*"
-    - uses: pnpm/action-setup@v3
+    - uses: pnpm/action-setup@v4
       with:
         version: latest
     - name: Debug pnpm environment