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](https://github.com/pnpm/action-setup/compare/v3...v4)

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

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

.github/workflows/bundlewatch.yml

@@ -25,7 +25,7 @@ jobs:
           node-version: "${{ env.NODE }}"
      
       - name: Install PNPM
-        uses: pnpm/action-setup@v3
+        uses: pnpm/action-setup@v4
         with:
           version: 8
 

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
           node-version: 18
 
       - name: Install PNPM
-        uses: pnpm/action-setup@v3
+        uses: pnpm/action-setup@v4
         with:
           version: 8
 

.github/workflows/test.yml

@@ -23,7 +23,7 @@ jobs:
           node-version: "${{ env.NODE }}"
 
       - name: Install PNPM
-        uses: pnpm/action-setup@v3
+        uses: pnpm/action-setup@v4
         with:
           version: 8