Bump tools.jackson:jackson-bom from 3.0.0-rc5 to 3.0.0-rc6 (spring-projects#10231)

Bumps [tools.jackson:jackson-bom](https://github.com/FasterXML/jackson-bom) from 3.0.0-rc5 to 3.0.0-rc6.
- [Commits](FasterXML/jackson-bom@jackson-bom-3.0.0-rc5...jackson-bom-3.0.0-rc6)

---
updated-dependencies:
- dependency-name: tools.jackson:jackson-bom
  dependency-version: 3.0.0-rc6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

build.gradle

@@ -70,7 +70,7 @@ ext {
     hsqldbVersion = '2.7.4'
     h2Version = '2.3.232'
     jacksonVersion = '2.19.2'
-    jackson3Version = '3.0.0-rc5'
+    jackson3Version = '3.0.0-rc6'
     jaxbVersion = '4.0.5'
     jcifsVersion = '2.1.40'
     jeroMqVersion = '0.6.0'