Release workflow results in malformed change notes being embedded into JAR and published to JetBrains Marketplace.

[nelsonjchen]

Describe the bug:

The change-notes value in the plugin that is uploaded to the marketplace is malformed. At a glance, this appears to be a malformed derivative of a converting some formatting for GitHub's format.

intellij-platform-plugin-template/.github/workflows/release.yml

Lines 38 to 49 in 4389629

	run: |
	CHANGELOG="$(cat << 'EOM' | sed -e 's/^[[:space:]]*$//g' -e '/./,$!d'
	${{ github.event.release.body }}
	EOM
	)"
	CHANGELOG="${CHANGELOG//'%'/'%25'}"
	CHANGELOG="${CHANGELOG//$'\n'/'%0A'}"
	CHANGELOG="${CHANGELOG//$'\r'/'%0D'}"
	echo "changelog=$CHANGELOG" >> $GITHUB_OUTPUT

Steps to reproduce:

1. Get a draft release created.
2. Publish the release, kicking off the release workflow.
3. Check the change notes inside the resulting zip to the JAR and/or Jetbrains Marketplace listing.

Expected behavior:

Change notes is not malformed on any target.

Additional context:

[nelsonjchen]

Ah, this is trying to pass to the next step! The next step uses the output immediately but does not reverse the encoding.

[nelsonjchen]

I just base64'd it for now. https://github.com/nelsonjchen/Colorized-Project/blob/fd42526ccd0d99f8527574210ea55df5fb5e35ea/.github/workflows/release.yml#L46

I'll probably update with whatever solution is done for this later.