fix: use gzip instead of deflate

semaphore currently has a bug where it would break on deflate encoding
(actix-web expects raw deflate encoding instead of the zlib-wrapped
variant mandated by the HTTP spec)

Since no other SDK uses deflate, let's just use gzip like everybody else

Author: untitaker

sentry_sdk/transport.py

@@ -1,7 +1,7 @@
 from __future__ import print_function
 
 import json
-import zlib
+import gzip
 import urllib3
 import logging
 import threading
@@ -41,15 +41,15 @@ def _make_pool(dsn, http_proxy, https_proxy):
 
 
 def send_event(pool, event, auth):
-    body = zlib.compress(json.dumps(event).encode("utf-8"))
+    body = gzip.compress(json.dumps(event).encode("utf-8"))
     response = pool.request(
         "POST",
         str(auth.store_api_url),
         body=body,
         headers={
             "X-Sentry-Auth": str(auth.to_header()),
             "Content-Type": "application/json",
-            "Content-Encoding": "deflate",
+            "Content-Encoding": "gzip",
         },
     )
     try: