chore(aws-cdk-lib): minimum supported node version is now v14 (aws#11964

)

This is the current active LTS version and is a good minimum
requirement.


----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

.yarnrc

@@ -1 +1,2 @@
 --install.check-files     true      # install will verify file tree of packages for consistency
+ignore-engines            true      # the 'engines' key for 'aws-cdk-lib' has specifies node14 as min while v1 will remain at node10

tools/pkglint/lib/rules.ts

@@ -1079,7 +1079,11 @@ export class MustHaveNodeEnginesDeclaration extends ValidationRule {
   public readonly name = 'package-info/engines';
 
   public validate(pkg: PackageJson): void {
-    expectJSON(this.name, pkg, 'engines.node', '>= 10.13.0 <13 || >=13.7.0');
+    if (cdkMajorVersion() === 2) {
+      expectJSON(this.name, pkg, 'engines.node', '>= 14.15.0');
+    } else {
+      expectJSON(this.name, pkg, 'engines.node', '>= 10.13.0 <13 || >=13.7.0');
+    }
   }
 }
 
@@ -1508,9 +1512,7 @@ export class UbergenPackageVisibility extends ValidationRule {
   ];
 
   public validate(pkg: PackageJson): void {
-    // eslint-disable-next-line @typescript-eslint/no-require-imports
-    const releaseJson = require(`${__dirname}/../../../release.json`);
-    if (releaseJson.majorVersion === 2) {
+    if (cdkMajorVersion() === 2) {
       // Only packages in the publicPackages list should be "public". Everything else should be private.
       if (this.publicPackages.includes(pkg.json.name) && pkg.json.private === true) {
         pkg.report({
@@ -1613,3 +1615,9 @@ function toRegExp(str: string): RegExp {
 function readBannerFile(file: string): string {
   return fs.readFileSync(path.join(__dirname, 'banners', file), { encoding: 'utf-8' }).trim();
 }
+
+function cdkMajorVersion() {
+  // eslint-disable-next-line @typescript-eslint/no-require-imports
+  const releaseJson = require(`${__dirname}/../../../release.json`);
+  return releaseJson.majorVersion as number;
+}