Update PNPM action in publish workflow to specify version 10

Author: Gary Woodfine

.github/workflows/publish.yml

@@ -20,6 +20,9 @@ jobs:
 
       - name: Setup PNPM
         uses: pnpm/action-setup@v4
+        with:
+          version: 10
+
 
       - name: Install dependencies
         run: pnpm install