v3.9.4

What's Changed

• fix: Response class doesn't have exception attribute by @CagriYonca in #820
• uwsgi: Remove post-fork hooks by @GSVarsha in #823
• [INSTA-64769] chore: use get_tracer() for all tracer access by @CagriYonca in #822
• fix: do not create spans when confluent-kafka.poll() response is empty by @CagriYonca in #824
• chore(version): Bump version to 3.9.4 by @CagriYonca in #825

Full Changelog: v3.9.3...v3.9.4