Bump junit from 5.10.2 to 5.10.3

Dependabot couldn't find the original pull request head commit, 469d94e.

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -2,7 +2,7 @@
 jetbrains-annotations = "24.1.0"
 spigot = "1.20.1-R0.1-SNAPSHOT"
 paperSpigot = "1.20.1-R0.1-SNAPSHOT"
-junit = "5.10.1"
+junit = "5.12.1"
 mockito = "4.11.0"
 adventure-api = "4.14.0"
 kotlin = "2.1.0"