Update to 1.21.6 using cosmos

plugin/build.gradle.kts

@@ -8,7 +8,9 @@ dependencies {
     // API
     implementation(project(":boosters-api"))
     // Galaxy
-    compileOnly("com.alttd:Galaxy-API:1.21-R0.1-SNAPSHOT")
+    compileOnly("com.alttd.cosmos:cosmos-api:1.21.6-R0.1-SNAPSHOT") {
+        isChanging = true
+    }
     // MyPet
     compileOnly("de.keyle:mypet:3.12-SNAPSHOT")
     // mcMMO
@@ -37,8 +39,8 @@ tasks {
 bukkit {
     name = rootProject.name
     main = "$group.BoostersPlugin"
-    apiVersion = "1.18"
-    authors = listOf("destro174")
+    apiVersion = "1.21"
+    authors = listOf("destro174", "akastijn")
     softDepend = listOf("MyPet", "mcMMO")
     commands {
         register("listboosters") {
@@ -47,4 +49,4 @@ bukkit {
             usage = "/listboosters"
         }
     }
-}
+}