chore: assign incoming ECS issues to Austin (#23107)

Temporarily assign incoming ECS issues to Austin so that he can be the first contact for any issues relating to the latest release. 

----

### All Submissions:

* [ ] Have you followed the guidelines in our [Contributing guide?](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md)

### Adding new Unconventional Dependencies:

* [ ] This PR adds new unconventional dependencies following the process described [here](https://github.com/aws/aws-cdk/blob/main/CONTRIBUTING.md/#adding-new-unconventional-dependencies)

### New Features

* [ ] Have you added the new feature to an [integration test](https://github.com/aws/aws-cdk/blob/main/INTEGRATION_TESTS.md)?
	* [ ] Did you use `yarn integ` to deploy the infrastructure and generate the snapshot (i.e. `yarn integ` without `--dry-run`)?

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

Author: madeline-k

.github/workflows/issue-label-assign.yml

@@ -142,8 +142,8 @@ env:
            {"area":"@aws-cdk/aws-ec2","keywords":["aws-ec2","ec2","vpc","privatesubnet","publicsubnet","vpngateway","vpnconnection","networkacl"],"labels":["@aws-cdk/aws-ec2"],"assignees":["corymhall"]},
            {"area":"@aws-cdk/aws-ecr","keywords":["aws-ecr","ecr"],"labels":["@aws-cdk/aws-ecr"],"assignees":["madeline-k"]},
            {"area":"@aws-cdk/aws-ecr-assets","keywords":["aws-ecr-assets","ecrassets"],"labels":["@aws-cdk/aws-ecr-assets"],"assignees":["madeline-k"]},
-           {"area":"@aws-cdk/aws-ecs","keywords":["aws-ecs","ecs"],"labels":["@aws-cdk/aws-ecs"],"assignees":["madeline-k"]},
-           {"area":"@aws-cdk/aws-ecs-patterns","keywords":["aws-ecs-patterns","ecs-patterns"],"labels":["@aws-cdk/aws-ecs-patterns"],"assignees":["madeline-k"]},
+           {"area":"@aws-cdk/aws-ecs","keywords":["aws-ecs","ecs"],"labels":["@aws-cdk/aws-ecs"],"assignees":["bvtujo"]},
+           {"area":"@aws-cdk/aws-ecs-patterns","keywords":["aws-ecs-patterns","ecs-patterns"],"labels":["@aws-cdk/aws-ecs-patterns"],"assignees":["bvtujo"]},
            {"area":"@aws-cdk/aws-efs","keywords":["aws-efs","efs","accesspoint"],"labels":["@aws-cdk/aws-efs"],"assignees":["corymhall"]},
            {"area":"@aws-cdk/aws-eks","keywords":["aws-eks","eks","fargateprofile","fargatecluster"],"labels":["@aws-cdk/aws-eks"],"assignees":["otaviomacedo"]},
            {"area":"@aws-cdk/aws-elasticache","keywords":["aws-elasticache","elastic-cache"],"labels":["@aws-cdk/aws-elasticache"],"assignees":["otaviomacedo"]},