Bump gen_batch_server to 0.9.0

See rabbitmq/gen-batch-server#25.

(cherry picked from commit a586b10)
(cherry picked from commit 7506d9d)

Author: michaelklishin

rabbitmq-components.mk

@@ -47,7 +47,7 @@ dep_cowboy = hex 2.14.1
 dep_cowlib = hex 2.16.0
 dep_credentials_obfuscation = hex 3.5.0
 dep_cuttlefish = hex 3.6.0
-dep_gen_batch_server = hex 0.8.8
+dep_gen_batch_server = hex 0.9.0
 dep_jose = hex 1.11.10
 dep_khepri = hex 0.17.5
 dep_khepri_mnesia_migration = hex 0.8.1