Bump pnpm/action-setup from 2 to 4

Bumps [pnpm/action-setup](https://github.com/pnpm/action-setup) from 2 to 4.
- [Release notes](https://github.com/pnpm/action-setup/releases)
- [Commits](pnpm/action-setup@v2...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]

.github/workflows/build.yml

@@ -30,7 +30,7 @@ jobs:
       with:
         node-version: 22
 
-    - uses: pnpm/action-setup@v2
+    - uses: pnpm/action-setup@v4
       name: Install pnpm
       id: pnpm-install
       with: