feat: Add httpcore based HTTP2Transport

requirements-testing.txt

@@ -10,4 +10,6 @@ executing
 asttokens
 responses
 pysocks
+socksio
+httpcore[http2]
 setuptools

sentry_sdk/client.py

@@ -23,7 +23,7 @@
 )
 from sentry_sdk.serializer import serialize
 from sentry_sdk.tracing import trace
-from sentry_sdk.transport import HttpTransport, make_transport
+from sentry_sdk.transport import BaseHttpTransport, make_transport
 from sentry_sdk.consts import (
     DEFAULT_MAX_VALUE_LENGTH,
     DEFAULT_OPTIONS,
@@ -427,7 +427,7 @@ def _capture_envelope(envelope):
             self.monitor
             or self.metrics_aggregator
             or has_profiling_enabled(self.options)
-            or isinstance(self.transport, HttpTransport)
+            or isinstance(self.transport, BaseHttpTransport)
         ):
             # If we have anything on that could spawn a background thread, we
             # need to check if it's safe to use them.