build: drop node v12 (#691)

BREAKING CHANGE: minimum supported `Node.js` version is `14.15.0`

Author: snitin315

.github/workflows/nodejs.yml

@@ -59,7 +59,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, windows-latest, macos-latest]
-        node-version: [12.x, 14.x, 16.x, 18.x]
+        node-version: [14.x, 16.x, 18.x]
         webpack-version: [latest]
 
     runs-on: ${{ matrix.os }}

babel.config.js

@@ -12,7 +12,7 @@ module.exports = (api) => {
           exclude:
             process.env.NODE_ENV === "test" ? [] : ["proposal-dynamic-import"],
           targets: {
-            node: "12.20.0",
+            node: "14.15.0",
           },
         },
       ],