Upgrade dependencies and CDK version (#32)

- Upgrade @aws-cdk/integ-runner to version 2.87.0-alpha.0
- Upgrade @aws-cdk/integ-tests-alpha to version 2.87.0-alpha.0
- Upgrade aws-cdk-lib to version 2.87.0
- Upgrade cdk-nag to version 2.27.75
- Update CDK version in .projenrc.js and package.json from 2.74.0 to 2.87.0

.projenrc.js

@@ -5,22 +5,22 @@ const { UpgradeDependenciesSchedule } = require('projen/lib/javascript');
 const project = new awscdk.AwsCdkConstructLibrary({
   author: 'Stefan Freitag',
   authorAddress: '[email protected]',
-  cdkVersion: '2.74.0',
+  cdkVersion: '2.87.0',
   defaultReleaseBranch: 'main',
   name: 'terraform-backend-s3-bucket',
   description: 'Creates an S3 bucket and a DynamoDB table for Terraform state and lock management.',
   repositoryUrl:
     'https://github.com/stefanfreitag/terraform-backend-s3-bucket.git',
   codeCov: true,
   devDeps: [
-    '@aws-cdk/integ-tests-alpha@2.74.0-alpha.0',
-    '@aws-cdk/integ-runner@2.74.0-alpha.0',
-    'cdk-nag@2.25.12',
+    '@aws-cdk/integ-tests-alpha@2.87.0-alpha.0',
+    '@aws-cdk/integ-runner@2.87.0-alpha.0',
+    'cdk-nag@2.27.75',
     'ts-node',
   ],
   depsUpgradeOptions: {
     workflowOptions: {
-      schedule: UpgradeDependenciesSchedule.WEEKLY,
+      schedule: UpgradeDependenciesSchedule.MONTHLY,
     },
   },
   stability: Stability.EXPERIMENTAL,