CDK bootstrapping fail, unable to parse environment specification

[Fitmavincent]

CDK bootstrap fail, unable to parse environment specification using AWSShellScript@1

Reproduction

1. Prepare a pipeline script for cdk bootstrap e.g.

- task: AWSShellScript@1
      inputs:
        awsCredentials: 'prod'
        regionName: 'ap-southeast-2'
        scriptType: 'inline'
        inlineScript: |
          echo "Bootstrapping environment"
          cdk bootstrap aws://$(ACCOUNT)/$(REGION)

      displayName: 'Deploying Project Infrastructure on Production'

2. Run the pipeline

Expected behavior

It should be able to go through the bootstrapping process without errors as awsCredentials, account and regions specification provided

However, after aws shell script task upgrade to 1.11.0, it no longer be able to cdk bootstrap and keep throwing errors on unable to parse environment specification

Your Environment

• On-prem or cloud based?: Cloud base
• Azure DevOps version: Version Dev18.M194.1 (AzureDevOps_M194_20211112.8)
• AWS Toolkit for Azure DevOps version: AWS CDK latest

[bryceitoc9]

This code shouldn't have changed between the two versions, and this should use whatever version of CDK is present on your Azure Pipelines Agent (the toolkit shouldn't install the CDK CLI). Just making sure, did you change any of your agents/the software they're running?