Bump jackson-bom from 2.11.3 to 2.12.3

Bumps [jackson-bom](https://github.com/FasterXML/jackson-bom) from 2.11.3 to 2.12.3.
- [Release notes](https://github.com/FasterXML/jackson-bom/releases)
- [Commits](FasterXML/jackson-bom@jackson-bom-2.11.3...jackson-bom-2.12.3)

Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -217,7 +217,7 @@
  <properties>
  <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
  <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
- <jackson.version>2.11.3</jackson.version>
+ <jackson.version>2.12.3</jackson.version>
  <jdom.version>2.0.2</jdom.version>
  <!--
  ! This controls the minimum java version