Slack tasks are missing the 4k output to file limit

[morarucostel]

Describe the bug
Using a task from the Slack category, a task with an output bigger than 4K, will break due to Tekton limitation on the output result parameters.

To Reproduce
Run Get Slack Channels task in a workflow and it will fail with
Unable to execute job with reason: TaskRunResultTooLarge - Task has exceeded the maximum allowed 4096 byte size for Result Parameters..

• Commands to run
• Interactions to cause issue to happen

Expected behavior
A clear and concise description of what you expected to happen.

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

Environment (please complete the following information):

• Version 2.9.18

Additional context
Add any other context about the problem here.

[tlawrie]

Hey @morarucostel. With this, do we continue to make changes to the tasks to handle the result to file OR do we wait for TEP-0086?

[tlawrie]

Hey @morarucostel checking in