feat(lambda): add Python 3.13 runtime (#32054)

### Issue # (if applicable)
NA

### Reason for this change

Adds Python 3.13 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 how you validated changes

Have added integration tests to validate the runtime support

### Checklist
- [ ] 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)

----

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

Author: Vandita2020

packages/@aws-cdk-testing/framework-integ/test/aws-lambda/test/integ.runtime.inlinecode.js.snapshot/aws-cdk-lambda-runtime-inlinecode.assets.json

@@ -1,55 +1,5 @@
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@@ -250,57 +200,7 @@
     "PYTHON312ServiceRoleBEB03378"
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-  "NODEJS16XServiceRoleB9DAFDFD": {
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    "Properties": {
     "AssumeRolePolicyDocument": {
@@ -331,23 +231,23 @@
     ]
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-  "NODEJS16XDE5DD82D": {
+  "PYTHON3136F4F65AE": {
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     "Code": {
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+     "ZipFile": "def handler(event, context):\n  return \"success\""
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     "Handler": "index.handler",
     "Role": {
      "Fn::GetAtt": [
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+      "PYTHON313ServiceRole907582AC",
       "Arn"
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+    "Runtime": "python3.13"
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+    "PYTHON313ServiceRole907582AC"
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@@ -452,11 +352,6 @@
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@@ -477,14 +372,9 @@
     "Ref": "PYTHON3127B62731D"
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-  "NODEJS14XfunctionName": {
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+    "Ref": "PYTHON3136F4F65AE"
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