fix(deps): update dependency org.spongepowered:spongeapi to v16

Author: renovate[bot]

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ metadata.format.version = "1.1"
 
 velocity = "3.4.0-SNAPSHOT"
 paper = "1.21.8-R0.1-SNAPSHOT"
-sponge = "14.0.0"
+sponge = "16.0.0"
 blossom = "2.1.0"
 shadow = "9.1.0"
 miniplaceholders = "3.0.1"