feat(synthetics): graduate to stable 🚀 (#27305)

We are excited to graduate the `@aws-cdk/aws-synthetics-alpha` module to STABLE. It now lives on as `aws-cdk-lib/aws-synthetics`. 

**Deprecated properties removed**:

- Runtimes before `SYNTHETICS_NODEJS_PUPPETEER_3_5` have been removed from the stable module. Use a later version instead.
- `enableAutoDeleteLambdas` has been removed from the stable module. Use `cleanup: Cleanup.LAMBDA` instead, which achieves the same affect via custom resource.

----

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

packages/@aws-cdk-testing/framework-integ/.gitignore

@@ -9,6 +9,9 @@ junit.xml
 coverage
 nyc.config.js
 
+!test/aws-synthetics/test/canaries/**/*
+
+
 !**/*.snapshot/**/asset.*/*.js
 !**/*.snapshot/**/asset.*/*.d.ts
 

packages/@aws-cdk/aws-synthetics-alpha/test/integ.canary-auto-delete-lambda.ts → packages/@aws-cdk-testing/framework-integ/test/aws-synthetics/test/integ.canary-auto-delete-lambda.ts

@@ -1,7 +1,7 @@
-import { App, Stack, StackProps } from 'aws-cdk-lib';
+import { App, Stack, StackProps } from 'aws-cdk-lib/core';
 import { IntegTest } from '@aws-cdk/integ-tests-alpha';
 import { Construct } from 'constructs';
-import * as synthetics from '../lib';
+import * as synthetics from 'aws-cdk-lib/aws-synthetics';
 import { AwsCustomResource, AwsCustomResourcePolicy, PhysicalResourceId } from 'aws-cdk-lib/custom-resources';
 
 class TestStack extends Stack {

packages/@aws-cdk/aws-synthetics-alpha/test/integ.canary.ts → packages/@aws-cdk-testing/framework-integ/test/aws-synthetics/test/integ.canary.ts

@@ -3,8 +3,8 @@
 import * as path from 'path';
 import * as apigateway from 'aws-cdk-lib/aws-apigateway';
 import * as s3 from 'aws-cdk-lib/aws-s3';
-import * as cdk from 'aws-cdk-lib';
-import { Canary, Cleanup, Code, Runtime, Schedule, Test } from '../lib';
+import * as cdk from 'aws-cdk-lib/core';
+import { Canary, Cleanup, Code, Runtime, Schedule, Test } from 'aws-cdk-lib/aws-synthetics';
 import { ExpectedResult, IntegTest } from '@aws-cdk/integ-tests-alpha';
 import { RemovalPolicy } from 'aws-cdk-lib';
 

packages/@aws-cdk/aws-synthetics-alpha/test/integ.vpc.ts → packages/@aws-cdk-testing/framework-integ/test/aws-synthetics/test/integ.vpc.ts

@@ -2,8 +2,8 @@
 
 import * as path from 'path';
 import * as ec2 from 'aws-cdk-lib/aws-ec2';
-import * as cdk from 'aws-cdk-lib';
-import * as synthetics from '../lib';
+import * as cdk from 'aws-cdk-lib/core';
+import * as synthetics from 'aws-cdk-lib/aws-synthetics';
 
 /*
  * Stack verification steps: