Bumps `jackson.version` from 2.12.3 to 2.12.4.

Updates `jackson-module-parameter-names` from 2.12.3 to 2.12.4
- [Release notes](https://github.com/FasterXML/jackson-modules-java8/releases)
- [Commits](FasterXML/jackson-modules-java8@jackson-modules-java8-2.12.3...jackson-modules-java8-2.12.4)

Updates `jackson-datatype-jdk8` from 2.12.3 to 2.12.4

Updates `jackson-datatype-jsr310` from 2.12.3 to 2.12.4

---
updated-dependencies:
- dependency-name: com.fasterxml.jackson.module:jackson-module-parameter-names
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: com.fasterxml.jackson.datatype:jackson-datatype-jdk8
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: com.fasterxml.jackson.datatype:jackson-datatype-jsr310
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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