Add a kotlin_coroutines_version property to the gradle.properties file and update the kotlinx-coroutines-core dependency

build.gradle.kts

@@ -51,7 +51,7 @@ subprojects {
     val shadowC by configurations.creating
     repositories { maven(url = "https://jitpack.io"); mavenCentral() }
     dependencies {
-        implementation("$kotlinX:kotlinx-coroutines-core:$kotlinBaseVer.0-RC")
+        implementation("$kotlinX:kotlinx-coroutines-core:${rootProject.property("kotlin_coroutines_version")}")
         implementation("$kotlinX:kotlinx-serialization-core:$serializationVer")
         implementation("$kotlinX:kotlinx-serialization-json:$serializationVer")
         listOf(

gradle.properties

@@ -11,6 +11,7 @@ minecraft=1.16.5
 forge_version=36.1
 kotlinforforge=1.12.1
 kotlinVer=1.5.10
+kotlin_coroutines_version=1.5.0
 serializationVer=1.2.1
 fabric_loader_version=0.11.3
 fabric_language_kotlin=1.6.1+kotlin.1.5.10