Enabler: Remove set-output from GitHub workflow

[blairlearn]

Update workflow to not use the set-output command.

GitHub has deprecated set-output and will be removing it. Fix this before that happens.

ESTIMATE TBD

Resources:

Prerequisites

Sub-Tasks

Notes

• The set-output command is deprecated and will be disabled soon. Please upgrade to using Environment Files.

• Change announcement

[blairlearn]

No work to be done. This was accomplished in f5f16a122b0ce33d4845355c423cf93a5e83a771 as part of the .Net 3.1 upgrade.