Update dependency org.jetbrains.dokka:dokka-gradle-plugin to v2.2.0

Author: renovate[bot]

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ androidGradlePlugin = "8.13.2"
 asm = "9.9.1"
 checkerQual = "3.54.0"
 coroutines = "1.10.2"
-dokka = "2.1.0"
+dokka = "2.2.0"
 grpc = "1.80.0"
 gson = "2.13.2"
 guava = "32.1.3-jre"