Update plugin sponge to v2.2.0 (#12)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

gradle/libs.versions.toml

@@ -16,4 +16,4 @@ velocity = "com.velocitypowered:velocity-api:3.2.0-SNAPSHOT"
 kotlin-jvm = "org.jetbrains.kotlin.jvm:1.8.20"
 ktlint = "org.jlleitschuh.gradle.ktlint:11.6.1"
 shadow = "com.github.johnrengelman.shadow:8.1.1"
-sponge = "org.spongepowered.gradle.plugin:2.1.1"
+sponge = "org.spongepowered.gradle.plugin:2.2.0"