update pnpm to v8

Author: jordaaash

.github/workflows/build-and-test.yml

@@ -22,7 +22,7 @@ jobs:
         id: install-pnpm
         uses: pnpm/action-setup@v2
         with:
-            version: 7
+            version: 8
             run_install: false
 
       - name: Install Node.js