Add Athena:UpdateWorkGroup permissions to CDK Exec Policy (#892)

### Feature or Bugfix
<!-- please choose -->
- Bugfix

### Detail
- When trying to update an Environment to use the latest Athena Version
(from this [previous
PR](#886)) and having CDK use
the data.all provided CDK Execution Policy ran into an `Update_Failed`
error on the Environment CloudFormation Stack due to missing permissions
for `athena:UpdateWorkGroup`
  - Added `athena:UpdateWorkGroup` to the CDK Exec Policy YAML file

### Relates
- N/A

### Security
Please answer the questions below briefly where applicable, or write
`N/A`. Based on
[OWASP 10](https://owasp.org/Top10/en/).

- Does this PR introduce or modify any input fields or queries - this
includes
fetching data from storage outside the application (e.g. a database, an
S3 bucket)?
  - Is the input sanitized?
- What precautions are you taking before deserializing the data you
consume?
  - Is injection prevented by parametrizing queries?
  - Have you ensured no `eval` or similar functions are used?
- Does this PR introduce any functionality or component that requires
authorization?
- How have you ensured it respects the existing AuthN/AuthZ mechanisms?
  - Are you logging failed auth attempts?
- Are you using or adding any cryptographic features?
  - Do you use a standard proven implementations?
  - Are the used keys controlled by the customer? Where are they stored?
- Are you introducing any new policies/roles/users?
  - Have you used the least-privilege principle? How?


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

deploy/cdk_exec_policy/cdkExecPolicy.yaml

@@ -24,6 +24,7 @@ Resources:
               - 'athena:*Tag*'
               - 'athena:GetWorkGroup'
               - 'athena:DeleteWorkGroup'
+              - 'athena:UpdateWorkGroup'
             Resource:
               - !Sub 'arn:${AWS::Partition}:athena:${AWS::Region}:${AWS::AccountId}:workgroup/${EnvironmentResourcePrefix}*'