Update rewrite to v8

Author: renovate[bot]

gradle/libs.versions.toml

@@ -4,7 +4,7 @@ lombok = "1.18.28"
 logback = "1.4.7"
 arrow = "1.1.6-alpha.91"
 rewrite-kotlin = "0.4.1"
-rewrite = "7.40.8"
+rewrite = "8.68.0"
 rewrite-testing = "1.37.0"
 openrewrite = "6.0.0"
 assertj = "3.24.2"