Update flyway to v12

Author: renovate[bot]

gradle/libs.versions.toml

@@ -17,7 +17,7 @@ fabric-loom = "1.14.10"
 fabric-api = "0.141.1+1.21.11"
 fabric-loader = "0.18.4"
 shadow = "9.3.0"
-flyway = "11.20.1"
+flyway = "12.0.0"
 junit = "6.0.2"
 jspecify = "1.0.0"
 moddevgradle = "2.0.139"