Bump prometheus

Author: chrissearle

gradle/libs.versions.toml

@@ -3,7 +3,7 @@
 ktor-version = "2.3.12"
 kotlin-version = "2.0.20"
 logback-version = "1.5.8"
-prometheus-version = "1.13.3"
+prometheus-version = "1.13.4"
 gradle_versions_filter_version = "0.1.16"
 detekt_version = "1.23.7"
 kotlinter_version = "4.4.1"