ci: workflow will now test against the latest LTS version of Node.js (22) instead of the older 18.x branch

Author: authcompanion

.github/workflows/authc2-ci.yml

@@ -16,7 +16,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [18.x]
+        node-version: [22.x]
 
     steps:
       - uses: actions/checkout@v3