Update dependencies and Gradle version.

build.gradle.kts

@@ -68,7 +68,7 @@ publishing {
 }
 
 dependencies {
-    compileOnly("com.alttd.cosmos:cosmos-api:26.2.build.17-stable")
+    compileOnly("com.alttd.cosmos:cosmos-api:26.3.build.19-alpha")
     compileOnly("com.github.milkbowl:VaultAPI:1.7") {
         exclude("org.bukkit","bukkit")
     }
@@ -163,4 +163,4 @@ paper {
             default = BukkitPluginDescription.Permission.Default.FALSE
         }
     }
-}
+}