chore(logs): remove hardcoded account id and region from snapshot (#27621)

In #26498, I injected specific account id and region in integration test snapshot by mistake. This PR replaces them with variables by taking snapshot correctly.

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

Author: tam0ri

packages/@aws-cdk-testing/framework-integ/test/aws-logs/test/integ.subscriptionfilter.js.snapshot/aws-cdk-subscriptionfilter-integ.assets.json

@@ -25,12 +25,7 @@ class SubscriptionFilterIntegStack extends Stack {
 }
 
 const app = new App();
-const testCase = new SubscriptionFilterIntegStack(app, 'aws-cdk-subscriptionfilter-integ', {
-  env: {
-    account: process.env.CDK_INTEG_ACCOUNT || process.env.CDK_DEFAULT_ACCOUNT,
-    region: process.env.CDK_INTEG_REGION || process.env.CDK_DEFAULT_REGION,
-  },
-});
+const testCase = new SubscriptionFilterIntegStack(app, 'aws-cdk-subscriptionfilter-integ');
 
 new IntegTest(app, 'integ-test', {
   testCases: [testCase],