[CICD-496] Fix autogenerated release notes (#96)

[CICD-496] Use EOF syntax when generating release notes

Newline characters are not currently encoded properly when release notes are autogenerated.

This PR uses the EOF syntax (now recommended by GitHub) to handle encoding of the multi-line release note string.

Author: mike-day

.github/actions/get-release-notes/action.yml

@@ -17,8 +17,7 @@ runs:
     - id: notes
       run: |
           notes=$(node ${{ github.action_path }}/getReleaseNotes ${{ inputs.version }} ${{ inputs.changelog }})
-          notes="${notes//'%'/'%25'}"
-          notes="${notes//$'\n'/'%0A'}"
-          notes="${notes//$'\r'/'%0D'}"
-          echo "RELEASE_NOTES=$notes" >> $GITHUB_OUTPUT
+          echo "RELEASE_NOTES<<EOF" >> $GITHUB_OUTPUT
+          echo "$notes" >> $GITHUB_OUTPUT
+          echo "EOF" >> $GITHUB_OUTPUT
       shell: bash