Add support for librdkafka 1.6.2

Author: dirx

.github/workflows/test.yml

@@ -26,7 +26,7 @@ jobs:
         librdkafka:
           - 'v1.8.2'
           - 'v1.7.0'
-          - 'v1.6.1'
+          - 'v1.6.2'
           - 'v1.5.3'
           - 'v1.4.4'
           - 'v1.3.0'