chore: migrate from AwsCdkConstructLibrary to CdklabsConstructLibrary (#2676)

Migrate to `CdklabsConstructLibrary` from `cdklabs-projen-project-types`
for cdklabs defaults and trusted publishing.

## Changes

- Switch to `CdklabsConstructLibrary` for cdklabs defaults
- Enables trusted publishing for npm, PyPI, and NuGet by default
(removes NPM_TOKEN, TWINE_USERNAME/TWINE_PASSWORD, NUGET_API_KEY)

## Additional options to preserve original behavior

- `private: false` - CdklabsConstructLibrary defaults to private: true,
but this is a public package
- `setNodeEngineVersion: false` - Prevent adding engines.node to
package.json
- `npmAccess: javascript.NpmAccess.PUBLIC` - Prevent adding
publishConfig to package.json
- `trustedPublishing: false` for NuGet - Keep using NUGET_API_KEY

Similar to #2671

Fixes
https://github.com/cdklabs/awscdk-asset-kubectl/actions/runs/22073584993

Author: aemada-aws