feat(synthetics): Update CloudWatch Synthetics NodeJS runtimes (#12907)

CloudWatch Synthetics recently released new NodeJS runtimes (https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Synthetics_Library_nodejs_puppeteer.html).

This PR is adding them and updating docs

Fixes #12906

----

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

packages/@aws-cdk/aws-synthetics/README.md

@@ -44,7 +44,7 @@ const canary = new synthetics.Canary(this, 'MyCanary', {
     code: synthetics.Code.fromAsset(path.join(__dirname, 'canary')),
     handler: 'index.handler',
   }),
-  runtime: synthetics.Runtime.SYNTHETICS_NODEJS_2_2,
+  runtime: synthetics.Runtime.SYNTHETICS_NODEJS_PUPPETEER_3_0,
 });
 ```
 
@@ -107,7 +107,7 @@ const canary = new Canary(this, 'MyCanary', {
     code: synthetics.Code.fromInline('/* Synthetics handler code */'),
     handler: 'index.handler', // must be 'index.handler'
   }),
-  runtime: synthetics.Runtime.SYNTHETICS_NODEJS_2_2,
+  runtime: synthetics.Runtime.SYNTHETICS_NODEJS_PUPPETEER_3_0,
 });
 
 // To supply the code from your local filesystem:
@@ -116,7 +116,7 @@ const canary = new Canary(this, 'MyCanary', {
     code: synthetics.Code.fromAsset(path.join(__dirname, 'canary')),
     handler: 'index.handler', // must end with '.handler'
   }),
-  runtime: synthetics.Runtime.SYNTHETICS_NODEJS_2_2,
+  runtime: synthetics.Runtime.SYNTHETICS_NODEJS_PUPPETEER_3_0,
 });
 
 // To supply the code from a S3 bucket:
@@ -125,7 +125,7 @@ const canary = new Canary(this, 'MyCanary', {
     code: synthetics.Code.fromBucket(bucket, 'canary.zip'),
     handler: 'index.handler', // must end with '.handler'
   }),
-  runtime: synthetics.Runtime.SYNTHETICS_NODEJS_2_2,
+  runtime: synthetics.Runtime.SYNTHETICS_NODEJS_PUPPETEER_3_0,
 });
 ```
 

packages/@aws-cdk/aws-synthetics/lib/canary.ts

@@ -112,6 +112,16 @@ export class Runtime {
    */
   public static readonly SYNTHETICS_NODEJS_2_2 = new Runtime('syn-nodejs-2.2');
 
+  /**
+   * `syn-nodejs-puppeteer-3.0` includes the following:
+   * - Lambda runtime Node.js 12.x
+   * - Puppeteer-core version 5.5.0
+   * - Chromium version 88.0.4298.0
+   *
+   * @see https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Synthetics_Library_nodejs_puppeteer.html#CloudWatch_Synthetics_runtimeversion-nodejs-puppeteer-3.0
+   */
+  public static readonly SYNTHETICS_NODEJS_PUPPETEER_3_0 = new Runtime('syn-nodejs-puppeteer-3.0');
+
   /**
    * @param name The name of the runtime version
    */

packages/@aws-cdk/aws-synthetics/test/canary.test.ts

@@ -44,7 +44,7 @@ test('Canary can have generated name', () => {
       handler: 'index.handler',
       code: synthetics.Code.fromInline('/* Synthetics handler code */'),
     }),
-    runtime: synthetics.Runtime.SYNTHETICS_NODEJS_2_0,
+    runtime: synthetics.Runtime.SYNTHETICS_NODEJS_PUPPETEER_3_0,
   });
 
   // THEN
@@ -355,4 +355,4 @@ test('can specify custom test', () => {
         };`,
     },
   });
-});
+});