change: replace deprecated set-output command with environment file in Github Actions

[jongwooo]

What

Update workflows to use environment file instead of deprecated set-output command.
For more information, see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

I found the workflow files that use set-output command through the following command:

$ find . -name '*.yml' -o -name '*.yaml' | xargs egrep '\bset-output\b'

Why

Resolve #1225

[iwilltry42]

Oh I didn't know about that, thank you @jongwooo !