New release workflow

.github/workflow_data/release.py

@@ -1,20 +1,27 @@
 #!/usr/bin/env python
+import requests
 import json
 import os
 
 if __name__ == "__main__":
+    with open(os.environ["GITHUB_EVENT_PATH"], "r") as f:
+        event = json.load(f)
+    release = requests.get(
+        event["release"]["url"],
+        headers={
+            "Accept": "application/vnd.github.v3+json",
+            "Authorization": f"token {os.environ['GITHUB_TOKEN']}"
+        }
+    ).json()
+    version_tag = release["tag_name"]
+    changelog = release["body"]
+
     notes_path = '.github/workflow_data/release.md'
-    with open(os.environ['GITHUB_EVENT_PATH'], "r") as f:
-        changelog = json.load(f)['pull_request']['body']
     with open(notes_path, "r") as f:
         template = f.read()
     notes = template.format(
-        ARTIFACT_TGZ=os.environ['ARTIFACT_TGZ'],
-        ARTIFACT_ZIP=os.environ['ARTIFACT_ZIP'],
-        VERSION_TAG=os.environ['VERSION_TAG'],
+        VERSION_TAG=version_tag,
         CHANGELOG=changelog
     )
     with open(notes_path, "w") as f:
         f.write(notes)
-    with open(os.environ["ARTIFACT_TGZ"].removesuffix(".tgz") + ".md", "w") as f:
-        f.write(changelog.strip() + "\n\n")