Fix release workflow with proper notes generation (#212)

Author: Kyle-Ye

.github/workflows/release.yml

@@ -35,7 +35,6 @@ jobs:
           echo "xcode_version=$(xcodebuild -version | head -1)" >> $GITHUB_OUTPUT
           echo "swift_version=$(swift --version 2>&1 | head -1)" >> $GITHUB_OUTPUT
       - name: Generate Release Notes
-        id: release_notes
         run: |
           TAG_NAME="${GITHUB_REF#refs/tags/}"
           # Find the previous tag
@@ -44,8 +43,6 @@ jobs:
           DOWNLOAD_URL="https://github.com/${REPO}/releases/download/${TAG_NAME}/OpenAttributeGraph.xcframework.zip"
 
           {
-            echo 'body<<RELEASE_NOTES_EOF'
-
             # Binary Target section first
             echo "## Binary Target"
             echo ""
@@ -65,25 +62,22 @@ jobs:
             echo "- ${{ steps.build_info.outputs.swift_version }}"
             echo ""
 
-            # What's Changed section
+            # What's Changed section (auto-generated by GitHub)
             if [ -n "$PREV_TAG" ]; then
-              echo "## What's Changed"
-              git log "${PREV_TAG}..HEAD" --pretty=format:"* %s by @%an in ${GITHUB_SERVER_URL}/${REPO}/commit/%H" --no-merges
-              echo ""
-              echo ""
-              echo "**Full Changelog**: ${GITHUB_SERVER_URL}/${REPO}/compare/${PREV_TAG}...${TAG_NAME}"
+              gh api "repos/${REPO}/releases/generate-notes" \
+                -f tag_name="${TAG_NAME}" \
+                -f previous_tag_name="${PREV_TAG}" \
+                --jq '.body'
             else
-              echo "## What's Changed"
-              git log --pretty=format:"* %s by @%an in ${GITHUB_SERVER_URL}/${REPO}/commit/%H" --no-merges
-              echo ""
+              gh api "repos/${REPO}/releases/generate-notes" \
+                -f tag_name="${TAG_NAME}" \
+                --jq '.body'
             fi
-
-            echo 'RELEASE_NOTES_EOF'
-          } >> "$GITHUB_OUTPUT"
+          } > release_notes.md
       - name: Create Release
         uses: ncipollo/release-action@v1
         with:
-          body: ${{ steps.release_notes.outputs.body }}
+          bodyFile: release_notes.md
           allowUpdates: true
           artifacts: ".build/Xcode/Frameworks/OpenAttributeGraph.xcframework.zip"
           token: ${{ secrets.GITHUB_TOKEN }}