Align testcontainers-kafka to the version used in Gerrit

Fix an issue where the Kafka container was failing to start because
of an incompatibility between the Gerrit-provided testcontainer version
and the one required by testcontainers-kafka.

Change-Id: I683aaaeb53fcc5b524494ab4526828c536dc40ec
diff --git a/external_plugin_deps.bzl b/external_plugin_deps.bzl
index bbc1da5..0945768 100644
--- a/external_plugin_deps.bzl
+++ b/external_plugin_deps.bzl
@@ -9,8 +9,8 @@
 
     maven_jar(
         name = "testcontainers-kafka",
-        artifact = "org.testcontainers:kafka:1.10.6",
-        sha1 = "5984e31306bd6c84a36092cdd19e0ef7e2268d98",
+        artifact = "org.testcontainers:kafka:1.13.0",
+        sha1 = "ab6b31212f6a0ce341aa907fceffb722d9b9f3f7",
     )
 
     maven_jar(