drop support for node 14

Author: mansona

.github/workflows/ci.yml

@@ -19,7 +19,7 @@ jobs:
     - uses: actions/checkout@v3
     - uses: actions/setup-node@v3
       with:
-        node-version: 14
+        node-version: 16
         cache: 'npm'
 
     - run: npm ci
@@ -35,7 +35,6 @@ jobs:
           - ubuntu-latest
           - macos-latest
         node:
-          - 14
           - 16
           - 18
           - 20
@@ -78,7 +77,7 @@ jobs:
 
     - uses: actions/setup-node@v3
       with:
-        node-version: 14
+        node-version: 16
         cache: 'npm'
 
     - uses: kellyselden/ember-cli-update-action@v5

.github/workflows/publish.yml

@@ -12,7 +12,7 @@ jobs:
     - uses: actions/checkout@v3
     - uses: actions/setup-node@v3
       with:
-        node-version: 14
+        node-version: 16
         registry-url: 'https://registry.npmjs.org'
 
     - run: npm publish

appveyor.yml

@@ -1,6 +1,6 @@
 environment:
   matrix:
-    - nodejs_version: "14"
+    - nodejs_version: "16"
   DEBUG: "ember-cli-update,boilerplate-update,git-diff-apply"
 
 branches:

package.json

@@ -31,7 +31,7 @@
   },
   "homepage": "https://github.com/ember-cli/ember-cli-update#readme",
   "engines": {
-    "node": ">=14.15"
+    "node": ">=16"
   },
   "files": [
     "bin",