Update Khepri from 0.17.2 to 0.17.3

Khepri release notes:
https://github.com/rabbitmq/khepri/releases/tag/v0.17.3

(cherry picked from commit d8f21a3)

Author: dumbbell

rabbitmq-components.mk

@@ -45,7 +45,7 @@ dep_credentials_obfuscation = hex 3.5.0
 dep_cuttlefish = hex 3.6.0
 dep_gen_batch_server = hex 0.8.8
 dep_jose = hex 1.11.10
-dep_khepri = hex 0.17.2
+dep_khepri = hex 0.17.3
 dep_khepri_mnesia_migration = hex 0.8.0
 dep_meck = hex 1.0.0
 dep_osiris = git https://github.com/rabbitmq/osiris v1.10.2