ci: drop node 12 from pipeline

Author: roggervalf

jobs/build.yml

@@ -11,12 +11,12 @@ jobs:
   strategy:
     maxParallel: 3
     matrix:
+      node-18:
+        node_version: ^18.20.8
       node-16:
         node_version: ^16.13.0
       node-14:
         node_version: ^14.18.0
-      node-12:
-        node_version: ^12.6.0
   steps:
   - task: NodeTool@0
     displayName: " Install Node.js"