Use unredirected headers

tools/build/package

@@ -46,19 +46,17 @@ def _read_manifest(path, platform, versions):
 
 
 def _download_artifact(uri) -> io.BytesIO:
-    headers = {}
-
     # Add auth headers if the github token is available, on the build servers it is, but when running locally it is not.
     # Some operations do not require authentication but we do it anyway to avoid API call rate problems
+    request = urllib.request.Request(url=uri)
+    request.add_unredirected_header(key="Accept", val="application/vnd.github+json")
     if 'GITHUB_TOKEN' in os.environ:
         GITHUB_TOKEN = os.environ['GITHUB_TOKEN']
-        headers = {'Authorization': f'token {GITHUB_TOKEN}'}
+        request.add_unredirected_header(key="Authorization", val=f"Bearer {GITHUB_TOKEN}")
         print('  Downloading with authorization')
     else:
         print('  Downloading without authorization')
-
-    req = urllib.request.Request(uri, headers=headers)
-    with urllib.request.urlopen(req) as response:
+    with urllib.request.urlopen(request) as response:
         data = response.read()
     assert (data)
     return io.BytesIO(data)