ddtrace 2.11.1 on Python PyPI

tracing(django): This fix resolves a bug where ddtrace was exhausting a Django stream response before returning it to user.
Fixed an issue with some module imports with native specs that don't support attribute assignments, resulting in a TypeError exception at runtime.
internal: Fix Already mutably borrowed error by reverting back to pure-python rate limiter.
This fix resolves an issue where ddtrace package files were published with incorrect file attributes.
profiling: Fixes an issue where the profiler could erroneously try to load protobuf in autoinjected environments, where it is not available.
Fixes an issue where crashtracking environment variables for Python were inconsistent with those used by other runtimes.
profiling: Fixes endpoing profiling for stack v2, that is when DD_PROFILING_STACK_V2_ENABLED set.