Hide output from select 'az containerapp' command calls

[cormacpayne]

Description

Hide output from select az containerapp command calls

Issue

N/A

Building the task

• [x] npm install was ran within the azurecontainerapps folder to regenerate the package-lock.json file
• [x] tsc was ran within the azurecontainerapps folder to ensure all TypeScript was successfully compiled into JavaScript

Testing the task

• [ ] A new version of the AzureContainerAppsTest task was generated with these changes and published
  • [ ] The task was ran against the existing test suite to ensure backwards compatibility
  • [ ] The task was ran against a workflow that tests the changes introduced in this PR
• [ ] The local TypeScript code was tested against the mocha tests

Deploying the task

~- [ ] New argument(s) was added~ ~- [ ] The inputs array was updated in task.json to reflect the new argument(s)~ ~- [ ] The inputs array was updated in task.loc.json to reflect the new argument(s)~ ~- [ ] The corresponding loc properties were updated in resources.resjson to reflect the new argument(s)~

• [x] New version of the task
  • [x] The version property was updated in task.json to reflect the new version
  • [x] The version property was updated in task.loc.json to reflect the new version
  • [x] The version property was updated in vss-extension.json to reflect the new version
  • [x] The releaseNotes property was updated in task.json to reflect the changes made since the last release
  • [x] The releaseNotes property was updated in resources.resjson to reflect the changes made since the last release