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...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/ci.yml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - uses: pnpm/action-setup@v3
+    - uses: pnpm/action-setup@v4
       with:
         version: 8
     - uses: actions/setup-node@v4

.github/workflows/plan-release.yml

@@ -53,7 +53,7 @@ jobs:
         with:
           node-version: 18
 
-      - uses: pnpm/action-setup@v3
+      - uses: pnpm/action-setup@v4
         with:
           version: 8
       - run: pnpm install --frozen-lockfile

.github/workflows/publish.yml

@@ -50,7 +50,7 @@ jobs:
           # This creates an .npmrc that reads the NODE_AUTH_TOKEN environment variable
           registry-url: 'https://registry.npmjs.org'
 
-      - uses: pnpm/action-setup@v3
+      - uses: pnpm/action-setup@v4
         with:
           version: 8
       - run: pnpm install --frozen-lockfile