[Feature] Update action to use node 20 (#9)

Author: danielmarcano

.github/workflows/test.yml

@@ -8,7 +8,7 @@ jobs:
 
     strategy:
       matrix:
-        node-version: [10.x, 12.x, 14.x, 15.x]
+        node-version: [20.x]
 
     steps:
       - uses: actions/checkout@v2

README.md

@@ -28,7 +28,7 @@ jobs:
 
 ### Requirements:
 
-* NodeJS 12+
+* NodeJS 20+
 
 ### Setup
 

action.yml

@@ -6,5 +6,5 @@ branding:
   color: 'blue'
 
 runs:
-  using: 'node12'
+  using: 'node20'
   main: 'dist/index.js'

package-lock.json

@@ -1,6 +1,6 @@
 {
   "name": "action-pr-title",
-  "version": "1.0.0",
+  "version": "2.0.0",
   "description": "GitHub action to validate PR titles meet our guidelines",
   "main": "lib/index.js",
   "scripts": {
@@ -21,7 +21,7 @@
   "devDependencies": {
     "@types/chai": "^4.2.15",
     "@types/mocha": "^8.2.2",
-    "@types/node": "^12",
+    "@types/node": "^20.8.7",
     "@typescript-eslint/eslint-plugin": "^4.18.0",
     "@typescript-eslint/parser": "^4.18.0",
     "@vercel/ncc": "^0.27.0",