Update jackson to 2.21.1 (#1158)

* uprev jackson to 2.21.1
* changelog

---------

Signed-off-by: Sally MacFarlane <macfarla.github@gmail.com>

Author: macfarla

CHANGELOG.md

@@ -4,6 +4,7 @@
 ### Security
 - Updated base Docker image packages to address CVE-2025-68973 (HIGH severity) in gpgv package
 - Docker images now apply all available security updates during build
+- Updated jackson dependencies to 2.21.1
 
 ### Features Added
 - Update Netty to 4.2.9.Final

gradle/versions.gradle

@@ -22,8 +22,8 @@ dependencyManagement {
 
   dependencies {
     dependency 'com.google.code.findbugs:jsr305:3.0.2'
-    dependency 'com.fasterxml.jackson.core:jackson-databind:2.20.0'
-    dependency 'com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.20.0'
+    dependency 'com.fasterxml.jackson.core:jackson-databind:2.21.1'
+    dependency 'com.fasterxml.jackson.dataformat:jackson-dataformat-yaml:2.21.1'
 
     dependencySet(group: 'com.google.errorprone', version: '2.42.0') {
       entry 'error_prone_annotation'