feat!: deprecate node12. BREAKING CHANGE: Remove node12 from CI (#1095)

Author: ajewellamz

buildspec.yml

@@ -7,10 +7,6 @@ batch:
       buildspec: codebuild/nodejs_latest.yml
       env:
         image: aws/codebuild/standard:5.0
-    - identifier: testNodejs12
-      buildspec: codebuild/nodejs12.yml
-      env:
-        image: aws/codebuild/standard:5.0
     - identifier: testNodejs14
       buildspec: codebuild/nodejs14.yml
       env:
@@ -33,10 +29,6 @@ batch:
         variables:
           PUBLISH_LOCAL: "true"
         image: aws/codebuild/standard:5.0
-    - identifier: testVectorsNodejs12
-      buildspec: codebuild/test_vectors/nodejs12.yml
-      env:
-        image: aws/codebuild/standard:5.0
     - identifier: testVectorsNodejs14
       buildspec: codebuild/test_vectors/nodejs14.yml
       env:

codebuild/nodejs12.yml

@@ -36,9 +36,6 @@ module.exports = function (config) {
       'modules/**/build/module/test/*.js': ['webpack', 'credentials'],
     },
     webpack: {
-      resolve: {
-        extensions: ['.js'],
-      },
       mode: 'development',
       module: {
         rules: [
@@ -75,9 +72,11 @@ module.exports = function (config) {
       },
       devtool: 'source-map',
       resolve: {
+        extensions: ['.js'],
         fallback: {
           fs: false,
           crypto: false,
+          util: false
         },
       },
     },