fix(deps): update dependency net.kyori:adventure-api to v4.20.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -12,7 +12,7 @@ pluginyml = "0.6.0"
 bstats = "3.1.0"
 shadow = "8.1.1"
 configurate = "4.1.2"
-adventure = "4.18.0"
+adventure = "4.20.0"
 blossom = "2.1.0"
 geantyref = "1.3.13"
 indra = "3.1.3"