update release action

Author: alainm23

.github/workflows/release.yml

@@ -24,9 +24,24 @@ jobs:
       - name: Extract changelog from appdata
         id: changelog
         run: |
-          echo "changelog<<EOF" >> $GITHUB_OUTPUT
-          xmlstarlet sel -t -m "/component/releases/release[@version='${{ steps.version.outputs.version }}']/description" -c . data/io.github.alainm23.planify.appdata.xml.in.in | sed 's/<[^>]*>//g' >> $GITHUB_OUTPUT
-          echo "EOF" >> $GITHUB_OUTPUT
+          python3 << 'PYTHON_SCRIPT' >> $GITHUB_OUTPUT
+          import xml.etree.ElementTree as ET
+          tree = ET.parse('data/io.github.alainm23.planify.appdata.xml.in.in')
+          root = tree.getroot()
+          version = '${{ steps.version.outputs.version }}'
+          print('changelog<<EOF')
+          desc = root.find('.//release[@version="' + version + '"]/description')
+          if desc is not None:
+              for elem in desc:
+                  if elem.tag == 'p' and elem.text:
+                      print(elem.text.strip())
+                      print()
+                  elif elem.tag == 'ul':
+                      for li in elem.findall('li'):
+                          print(f"- {li.text.strip()}")
+                      print()
+          print('EOF')
+          PYTHON_SCRIPT
 
       - name: Create GitHub Release
         uses: softprops/action-gh-release@v2