remove specific node versions from CI

Author: dplewis

.github/workflows/ci.yml

@@ -68,11 +68,11 @@ jobs:
       matrix:
         include:
           - name: Node 18
-            NODE_VERSION: 18.20.3
+            NODE_VERSION: 18
           - name: Node 20
-            NODE_VERSION: 20.15.0
+            NODE_VERSION: 20
           - name: Node 22
-            NODE_VERSION: 22.4.0
+            NODE_VERSION: 22
       fail-fast: false
     steps:
     - name: Fix usage of insecure GitHub protocol