Bump versions in the rush init template. (#5393)

Author: iclanton

common/changes/@microsoft/rush/bump-rush-init-versions_2025-10-03-02-08.json

@@ -0,0 +1,10 @@
+{
+  "changes": [
+    {
+      "packageName": "@microsoft/rush",
+      "comment": "Bump the default Node and `pnpm` versions in the `rush init` template.",
+      "type": "none"
+    }
+  ],
+  "packageName": "@microsoft/rush"
+}

libraries/rush-lib/assets/rush-init/rush.json

@@ -26,7 +26,7 @@
    * Specify one of: "pnpmVersion", "npmVersion", or "yarnVersion".  See the Rush documentation
    * for details about these alternatives.
    */
-  "pnpmVersion": "8.15.8",
+  "pnpmVersion": "9.15.9",
 
   /*[LINE "HYPOTHETICAL"]*/ "npmVersion": "6.14.15",
   /*[LINE "HYPOTHETICAL"]*/ "yarnVersion": "1.9.4",
@@ -42,7 +42,7 @@
    * LTS schedule: https://nodejs.org/en/about/releases/
    * LTS versions: https://nodejs.org/en/download/releases/
    */
-  "nodeSupportedVersionRange": ">=18.20.3 <19.0.0 || >=20.14.0 <21.0.0",
+  "nodeSupportedVersionRange": ">=22.20.0 <23.0.0",
 
   /**
    * If the version check above fails, Rush will display a message showing the current