Replace deprecated command with environment file

[jongwooo]

Description

Resolve #288

Update .github/workflows/release.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 files that use set-output command through the following command:

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

AS-IS

run: echo ::set-output name=VERSION::$(echo $GITHUB_REF | cut -d / -f 3)

TO-BE

run: echo VERSION=$(echo $GITHUB_REF | cut -d / -f 3) >> $GITHUB_OUTPUT

Standard checks

• Unit tests: Any special considerations?
• Docs: Do we need to update any docs, internal or public?
• Backwards compatibility: Will this break existing apps? If so, what would be the extra work required to keep them working?

[CLAassistant]

All committers have signed the CLA.

[gordon-klotho]

Thanks for the update, glad to know our releases won't be broken come June 1st.