fix: drop node14 support

BREAKING CHANGE: support for node 14 has been removed

Author: lukekarrys

.github/workflows/ci-npmcli-arborist.yml

@@ -64,8 +64,6 @@ jobs:
             os: windows-latest
             shell: cmd
         node-version:
-          - 14.17.0
-          - 14.x
           - 16.13.0
           - 16.x
           - 18.0.0

workspaces/arborist/package.json

@@ -86,11 +86,17 @@
     ]
   },
   "engines": {
-    "node": "^14.17.0 || ^16.13.0 || >=18.0.0"
+    "node": "^16.13.0 || >=18.0.0"
   },
   "templateOSS": {
     "//@npmcli/template-oss": "This file is partially managed by @npmcli/template-oss. Edits may be overwritten.",
     "version": "4.18.0",
-    "content": "../../scripts/template-oss/index.js"
+    "content": "../../scripts/template-oss/index.js",
+    "ciVersions": [
+      "16.13.0",
+      "16.x",
+      "18.0.0",
+      "18.x"
+    ]
   }
 }