Drop node.js 14 support, add node 20

Refs: https://github.com/HowProgrammingWorks/Drop-Nodejs14
PR-URL: #74

Author: tshemsedinov

.github/workflows/test.yml

@@ -9,10 +9,10 @@ jobs:
     strategy:
       matrix:
         node:
-          - 14
           - 16
           - 18
           - 19
+          - 20
         os:
           - ubuntu-latest
           - windows-latest

package.json

@@ -41,7 +41,7 @@
     "fmt": "prettier --write \"**/*.js\" \"**/*.json\" \"**/*.md\" \".*rc\""
   },
   "engines": {
-    "node": "14 || 16 || 18 || 19"
+    "node": "16 || 18 || 19 || 20"
   },
   "readmeFilename": "README.md",
   "devDependencies": {