Upgrade CI workflow to use Node.js 22 and update .nvmrc

Co-authored-by: manekinekko <1699357+manekinekko@users.noreply.github.com>

Author: Copilot

.github/workflows/angular.yml

@@ -16,13 +16,13 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [22.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - name: Use Node.js ${{ matrix.node-version }}
-      uses: actions/setup-node@v2
+      uses: actions/setup-node@v4
       with:
         node-version: ${{ matrix.node-version }}
     - run: npm ci --legacy-peer-deps

.nvmrc

@@ -1 +1 @@
-18
+22