deps: update com.fasterxml.jackson:jackson-bom to v2.20.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -29,7 +29,7 @@ greenmail = "2.1.7"
 gson = "2.13.2"
 hikari = "7.0.2"
 hoplite = "2.9.0"
-jackson = "2.20.0"
+jackson = "2.20.1"
 jakartaMail = "2.0.2"
 jerseyCommon = "3.1.11"
 jgit = "7.4.0.202509020913-r"