feat(lambda): add Java25 runtime for Lambda (#35867)

### Issue # (if applicable)

N/A

### Reason for this change



Adds Java 25 runtime to the available [Lambda Runtimes constants](https://docs.aws.amazon.com/cdk/api/v2/docs/aws-cdk-lib.aws_lambda.Runtime.html#initializer)

### Description of changes



Have added integration tests to validate the runtime support

### Describe any new or updated permissions being added



N/A

### Description of how you validated changes



### Checklist
- [x] My code adheres to the [CONTRIBUTING GUIDE](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md) and [DESIGN GUIDELINES](https://github.com/aws/aws-cdk/blob/main/docs/DESIGN_GUIDELINES.md)

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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: bnusunny