Bump aws-cdk-lib from 2.255.0 to 2.257.0 in /cdk

[dependabot]

Bumps aws-cdk-lib from 2.255.0 to 2.257.0.

Release notes

Sourced from aws-cdk-lib's releases.

v2.257.0

⚠ BREAKING CHANGES

• ** L1 resources are automatically generated from public CloudFormation Resource Schemas. They are built to closely reflect the real state of CloudFormation. Sometimes these updates can contain changes that are incompatible with previous types, but more accurately reflect reality. In this release we have changed:

  • aws-neptunegraph: AWS::NeptuneGraph::GraphSnapshot: GraphIdentifier property is now required.

Features

• update L1 CloudFormation resource definitions (#37955) (211b06c)
• core: failSynthOnValidationErrors context key to suppress console output and exit code (#37909) (deb968f), closes aws/aws-cdk-cli#1515

---

Alpha modules (2.257.0-alpha.0)

v2.256.1

Bug Fixes

• invalid lock file (#37943) (73ae91d), closes #37726 #37929 #37870

---

Alpha modules (2.256.1-alpha.0)

v2.256.0

Features

• aws-cdk-lib: emits performance counters if synthesis is slow (#37919) (caa0f4c), closes #37843
• core: validations report is always written to cloud assembly (#37867) (dddc6e0)
• ec2: replace any return types with specific interfaces in IPeer methods (#36637) (626e44d), closes #36636
• s3: support bucketNamePrefix and bucketNamespace properties (#37386) (997b003), closes #37760

Bug Fixes

• core: handle token-wrapped Boxes in property merge strategies (#37902) (18435e3)
• core: prevent stack overflow on large construct trees (#37901) (10163cb), closes #37903

---

Alpha modules (2.256.0-alpha.0)

Changelog

Sourced from aws-cdk-lib's changelog.

Changelog

All notable changes to this project will be documented in this file. See standard-version for commit guidelines.

2.257.0-alpha.0 (2026-05-21)

2.256.1-alpha.0 (2026-05-20)

2.256.0-alpha.0 (2026-05-19)

2.255.0-alpha.0 (2026-05-18)

Features

• bedrock-agentcore-alpha: Graduation of the library to stable. The Policy submodule is the only submodule that remains in alpha. All other constructs have graduated to stable in aws-cdk-lib/aws-bedrockagentcore and we recommend migrating to the stable versions (#37876) (00cf601)

2.254.0-alpha.0 (2026-05-13)

Features

• bedrock-agentcore-alpha: add tags support to Evaluator and OnlineEvaluationConfig (#37804) (adbf88f)
• bedrock-agentcore-alpha: add identity L2 constructs (#37610) (67c3af2)
• mediapackagev2-alpha: add OAC integration between CloudFront and MediaPackageV2 (#37701) (654f59c)

Bug Fixes

• bedrock-agentcore-alpha: fix cedar policy bug (#37782) (e678d5c), closes #37828
• custom-resource-handlers: deployment fails when parameter already exists (#37852) (025c38c)

2.253.1-alpha.0 (2026-05-08)

2.253.0-alpha.0 (2026-05-06)

Features

• bedrock-agentcore-alpha: add OnlineEvaluationConfig and Evaluator L2 constructs (#37615) (c13de04), closes #37614
• glue-alpha: add extraPythonFiles support to PythonShellJob (#37130) (c9c6f9c), closes #34448

Bug Fixes

• bedrock-agentcore-alpha: self-managed memory strategy validation throws on unresolved tokens (#37691) (7956537), closes #37197

2.252.0-alpha.0 (2026-04-29)

2.251.0-alpha.0 (2026-04-24)

... (truncated)

Commits

• 211b06c feat: update L1 CloudFormation resource definitions (#37955)
• c0fe7ee chore(bundling): check if docker image is cached before building (#37951)
• 95284c5 fix: invalid lock file (#37943)
• b7090dd refactor: replace Lazy.uncachedString with Box API where context is not neede...
• deb968f feat(core): failSynthOnValidationErrors context key to suppress console outpu...
• 68c62d7 chore: update analytics metadata blueprints
• 30c7a2b chore: upgrade cloud-assembly packages to fix npm ci (#37932)
• 3c5e5f8 fix(merge-back): move dispose-polyfill to lib/private where perf.ts expects it
• 1f4c823 Merge remote-tracking branch 'origin/main' into merge-back/2.255.0
• 626e44d feat(ec2): replace any return types with specific interfaces in IPeer met...
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