Update to 1.21.6 using cosmos

settings.gradle.kts

@@ -1,12 +1,18 @@
 rootProject.name = "DataLockLib"
 
+val nexusUser = providers.gradleProperty("alttdDevPublishUser").get()
+val nexusPass = providers.gradleProperty("alttdDevPublishPass").get()
+
 include(":api")
 include(":plugin")
 
 dependencyResolutionManagement {
     repositories {
         mavenCentral()
-        maven("https://repo.destro.xyz/snapshots") // Altitude - Galaxy
+        maven {
+            name = "papermc"
+            url = uri("https://repo.papermc.io/repository/maven-public/")
+        }
     }
     repositoriesMode.set(RepositoriesMode.FAIL_ON_PROJECT_REPOS)
 }