Update pnpm/action-setup action to v6

Co-authored-by: Antoni Kępiński <22645979+xxczaki@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/release.yml

@@ -27,7 +27,7 @@ jobs:
           registry-url: 'https://registry.npmjs.org'
 
       - name: Setup pnpm
-        uses: pnpm/action-setup@v4
+        uses: pnpm/action-setup@v6
 
       - name: Install dependencies
         run: pnpm install --frozen-lockfile