fix(lambda-nodejs): bump bun to 1.2.23 for ARM64 support

[dsilbergleithcu-godaddy]

Latest version as of current date.

Fixes missing package for 1.1.30 when building on graviton instances

Issue # (if applicable)

Closes #35534.

Reason for this change

The aws-lambda-nodejs construct fails Docker bundling on ARM64 architectures (AWS Graviton instances) because bun@1.1.30 is missing the required @oven/bun-linux-aarch64 package. This causes npm to fail when trying to install bun during the Docker build process, with the error:

npm error Failed to find package "@oven/bun-linux-x64-baseline"

Description of changes

Bumped bun from version 1.1.30 to 1.2.23 in packages/aws-cdk-lib/aws-lambda-nodejs/lib/Dockerfile.

This addresses the issue because bun@1.2.23 includes proper ARM64 support via optional dependencies:

• @oven/bun-linux-aarch64
• @oven/bun-linux-aarch64-musl

Why this approach: This is a simpler solution than alternatives (such as switching to the curl-based bun installer) because:

1. Maintains consistency with the existing npm-based installation pattern used for other package managers (yarn, pnpm) in the same Dockerfile
2. Reduces supply chain risk by not introducing additional external dependencies (bun.sh installer endpoint)
3. Minimal change - just a version bump

Alternatives considered:

• Using the official bun installer script via curl - rejected due to added supply chain risk and deviation from existing patterns
• Platform-specific conditional installation - rejected as unnecessarily complex when a version bump suffices

Describe any new or updated permissions being added

None. This change only updates a package version.

Description of how you validated changes

Verified that bun@1.2.23 includes the required ARM64 packages:

$ npm view bun@1.2.23 optionalDependencies
{
  "@oven/bun-linux-aarch64": "1.2.23",
  "@oven/bun-linux-aarch64-musl": "1.2.23",
  ...
}

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

---

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

[dsilbergleithcu-godaddy]

@pahud this follows on the work from here: #35535

Similarly, this should pass tests without any changes to the tests

[aws-cdk-automation]

(This review is outdated)

[dsilbergleithcu-godaddy]

Exemption request:

We don't need to change tests here. In fact, we don't want to. We want to make sure it still passes any existing tests.

✅ Updated pull request passes all PRLinter validations. Dismissing previous PRLinter review.

[mergify]

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