Pin pnpm for reproducible Pages builds

Author: lql341

package.json

@@ -1,16 +1,17 @@
-{
-  "name": "opensource-community-site",
-  "private": true,
-  "type": "module",
-  "scripts": {
-    "dev": "astro dev",
-    "build": "astro check && astro build",
-    "preview": "astro preview",
-    "check": "astro check"
-  },
-  "devDependencies": {
-    "@astrojs/check": "latest",
-    "astro": "latest",
-    "typescript": "^6.0.0"
-  }
-}
+{
+  "name": "opensource-community-site",
+  "private": true,
+  "type": "module",
+  "packageManager": "pnpm@11.9.0",
+  "scripts": {
+    "dev": "astro dev",
+    "build": "astro check && astro build",
+    "preview": "astro preview",
+    "check": "astro check"
+  },
+  "devDependencies": {
+    "@astrojs/check": "latest",
+    "astro": "latest",
+    "typescript": "^6.0.0"
+  }
+}