fix(lambda): Lambda Insights Layer ARN 1.0.229 in us-west-1 on ARM64 incorrect (#26626)

Existing [documentation](https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/Lambda-Insights-extension-versionsARM.html#Lambda-Insights-extension-ARM-1.0.229.0)

Closes #26615 .



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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: khushail

packages/aws-cdk-lib/region-info/build-tools/fact-tables.ts

@@ -227,7 +227,7 @@ export const CLOUDWATCH_LAMBDA_INSIGHTS_ARNS: { [key: string]: any } = {
       // US East (Ohio)
       'us-east-2': 'arn:aws:lambda:us-east-2:580247275435:layer:LambdaInsightsExtension-Arm64:7',
       // US West (N. California)
-      'us-west-1': 'arn:aws:lambda:us-west-1:580247275435:layer:LambdaInsightsExtension-Arm64:5',
+      'us-west-1': 'arn:aws:lambda:us-west-1:580247275435:layer:LambdaInsightsExtension-Arm64:3',
       // US West (Oregon)
       'us-west-2': 'arn:aws:lambda:us-west-2:580247275435:layer:LambdaInsightsExtension-Arm64:5',
       // Africa (Cape Town)

packages/aws-cdk-lib/region-info/test/__snapshots__/region-info.test.js.snap

@@ -1155,7 +1155,7 @@ exports[`built-in data is correct 1`] = `
     "lambdaInsightsArmVersions": {
       "1.0.119.0": undefined,
       "1.0.135.0": undefined,
-      "1.0.229.0": "arn:aws:lambda:us-west-1:580247275435:layer:LambdaInsightsExtension-Arm64:5",
+      "1.0.229.0": "arn:aws:lambda:us-west-1:580247275435:layer:LambdaInsightsExtension-Arm64:3",
     },
     "lambdaInsightsVersions": {
       "1.0.119.0": "arn:aws:lambda:us-west-1:580247275435:layer:LambdaInsightsExtension:16",