Update plugin buildconfig to v5.4.0

gradle/libs.versions.toml

@@ -63,6 +63,6 @@ asm = { group = "org.ow2.asm", name = "asm", version = "9.7" }
 kotlinx-serialization = { id = "org.jetbrains.kotlin.plugin.serialization", version.ref = "kotlin" }
 kotlinx-jvm = { id = "org.jetbrains.kotlin.jvm", version.ref = "kotlin" }
 gradle-publish = { id = "com.gradle.plugin-publish", version = "1.2.1" }
-buildconfig = { id = "com.github.gmazzo.buildconfig", version = "5.3.5" }
+buildconfig = { id = "com.github.gmazzo.buildconfig", version = "5.4.0" }
 mikbot = { id = "dev.schlaubi.mikbot.gradle-plugin", version = "1.0.0" }
 ksp = { id = "com.google.devtools.ksp", version.ref = "ksp" }