Switch to pnpm (#35274)

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: silverwind <me@silverwind.io>

.github/workflows/pull-e2e-tests.yml

@@ -23,13 +23,14 @@ jobs:
         with:
           go-version-file: go.mod
           check-latest: true
+      - uses: pnpm/action-setup@v4
       - uses: actions/setup-node@v4
         with:
           node-version: 24
-          cache: npm
-          cache-dependency-path: package-lock.json
+          cache: pnpm
+          cache-dependency-path: pnpm-lock.yaml
       - run: make deps-frontend frontend deps-backend
-      - run: npx playwright install --with-deps
+      - run: pnpm exec playwright install --with-deps
       - run: make test-e2e-sqlite
         timeout-minutes: 40
         env: