Revert "Update to 1.21?"

This reverts commit 3ea078237d.

api/build.gradle.kts

@@ -3,8 +3,8 @@ plugins {
 }
 
 dependencies {
-    compileOnly("com.alttd:Galaxy-API:1.21-R0.1-SNAPSHOT")  {
-        isChanging = true
+    compileOnly("com.alttd:Galaxy-API:1.19.2-R0.1-SNAPSHOT") {
+//        exclude("net.kyori")
     }
     compileOnly("org.spongepowered:configurate-yaml:4.1.2") // Configurate
     compileOnly("net.luckperms:api:5.3") // Luckperms