[SUGGESTION] Replace deprecated `set-output` command with environment file

[jongwooo]

Description

In .github/workflows/release.yml, set-output command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information, see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

[lukekarrys]

This has been completed in #6229. Thanks for the report!