chore: Replace deprecated command with environment file

[jongwooo]

What this PR does / why we need it:

Update .github/workflows/lint-test.yaml 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 file that use set-output command through the following command:

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

AS-IS

echo "::set-output name=changed::true"

TO-BE

echo "changed=true" >> $GITHUB_OUTPUT

Which issue(s) this PR fixes:

Fixes #969

Does this PR introduced a user-facing change?

None

Additional documentation, usage docs, etc.:

[benjaminhuo]

@jongwooo Thank you!