Expose Validation.runtime() function

Author: alexander-yevsyukov

buildSrc/src/main/kotlin/io/spine/dependency/local/Validation.kt

@@ -49,7 +49,10 @@ object Validation {
     const val gradlePluginLib = "$group:$prefix-gradle-plugin:$version"
 
     const val runtimeModule = "${Spine.group}:spine-$prefix-jvm-runtime"
-    const val runtime = "$runtimeModule:$version"
+
+    fun runtime(version: String) = "$runtimeModule:$version"
+    val runtime = runtime(version)
+
     const val javaModule = "$group:$prefix-java"
     const val java = "$javaModule:$version"
     const val javaBundleModule = "$group:$prefix-java-bundle"