Amazon Bedrock AgentCore Samples - [Bug] 403 error in example for MCP server

**Describe the bug**

In mcp server example following the exact steps is getting me an error as follows.
🔄 Initializing MCP session...
Error in post_writer: Client error '403 Forbidden' for url 'https://bedrock-agentcore.us-east-1.amazonaws.com/runtimes/arn%3Aaws%3Abedrock-agentcore%3Aus-east-1%3A536824385237%3Aruntime%2Fmcp_server_ac-4ZCTFo8gFK/invocations?qualifier=DEFAULT'
For more information check: https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/403

**To Reproduce**
Steps to reproduce the behavior (or some version of this):
Followed exact same steps

**Expected behavior**
A clear and concise description of what you expected to happen.
get a list of tools

**Screenshots**
If applicable, add screenshots to help explain your problem.

**! Additional context !**
- Sagemaker Studio Kernel used
- Instance used : on mac and linux
- commit link to the workshop if you're not using the latest