Downgraded Log4J to 2.23.1 for apache/logging-log4j2#2933.

Author: ianbrandt

gradle/libs.versions.toml

@@ -9,9 +9,11 @@ jakarta-inject = "2.0.1"
 junit = "5.11.0"
 jvm-dependency-conflict-resolution = "2.1.2"
 kotlin = "2.0.10"
-kotlinx-coroutines = "1.8.1"
+kotlinx-coroutines = "1.9.0"
 kotlinx-datetime = "0.6.1"
-log4j = "2.24.0"
+# Getting warnings with Log4J 2.24.0:
+# https://github.com/apache/logging-log4j2/issues/2933.
+log4j = "2.23.1"
 log4j-kotlin = "1.5.0"
 mockk = "1.13.12"
 spring = "6.1.13"