fix(tests): increase receive_timeout for async test stability

Author: solnic

test/support/case.ex

@@ -11,6 +11,10 @@ defmodule Sentry.Case do
     # resolve_from_active_scopes won't leak config from concurrent async tests.
     Sentry.Test.Config.register()
 
+    # Override the global receive_timeout (50ms in config.exs) with a value
+    # that won't flake under async load.
+    Sentry.Test.Config.put(finch_request_opts: [receive_timeout: 2000])
+
     # Start a fresh RateLimiter for each test with unique names for isolation.
     setup_rate_limiter()