fix: use caret range for aws-cdk-lib in project template

[Hweinstock]

Description

Problem

When the CDK package bumps its aws-cdk-lib required version, the CLI must manually update its version. This can lead to brief periods where there is an incompatibility between releases/fixes.

Solution

Change aws-cdk-lib from a pinned version (2.243.0) to a caret range (^2.248.0) so npm can auto-resolve peer dep requirements. This prevents future breakage when the constructs package bumps its cdk-lib minimum.

Related Issue

N/A

Documentation PR

N/A

Type of Change

• Bug fix
• New feature
• Breaking change
• Documentation update
• Other (please describe):

Testing

How have you tested the change?

• I ran npm run test:unit and npm run test:integ

• I ran npm run typecheck

• I ran npm run lint

• If I modified src/assets/, I ran npm run test:update-snapshots and committed the updated snapshots

• agentcore create succeeds after the change (was failing with ERESOLVE before)

Checklist

• I have read the CONTRIBUTING document
• I have added any necessary tests that prove my fix is effective or my feature works
• I have updated the documentation accordingly
• I have added an appropriate example to the documentation to outline the feature, or no new docs are needed
• My changes generate no new warnings
• Any dependent changes have been merged and published

---

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terms of your choice.

[github-actions]

Package Tarball

aws-agentcore-0.8.0.tgz

How to install

npm install https://github.com/aws/agentcore-cli/releases/download/pr-805-tarball/aws-agentcore-0.8.0.tgz

[notgitika]

LGTM