build: update vendored six from 1.11.0 to 1.16.0 (#2398) #71

Job	Run time
📦 Build the source distribution	31s
Tests on 3.8	7m 55s
Tests for Kafka 0.8.2.2	3m 32s
Tests on 3.9	8m 12s
Tests for Kafka 0.9.0.1	3m 21s
Tests on 3.10	7m 11s
Tests for Kafka 0.10.2.2	4m 31s
Tests on 3.11	7m 52s
Tests for Kafka 0.11.0.2	5m 49s
Tests on pypy3.9	11m 25s
Tests for Kafka 0.11.0.3	5m 17s
Tests on ~3.12.0-0	9m 58s
Tests for Kafka 1.1.1	7m 40s
Tests for Kafka 2.4.0	7m 10s
Tests for Kafka 2.5.0	7m 18s
Tests for Kafka 2.6.0	7m 21s
✅ Ensure the required checks passing	1s
	1h 45m 4s

Provide feedback