(1.6.x): Bump org.immutables:value from 2.9.3 to 2.10.0

Bumps [org.immutables:value](https://github.com/immutables/immutables) from 2.9.3 to 2.10.0.
- [Release notes](https://github.com/immutables/immutables/releases)
- [Commits](immutables/immutables@2.9.3...2.10.0)

---
updated-dependencies:
- dependency-name: org.immutables:value
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

build.gradle

@@ -23,7 +23,7 @@ buildscript {
 		cfJavaClientVersion = "5.10.0.RELEASE"
 		checkstyleVersion = "8.37"
 		commonsTextVersion = "1.10.0"
-		immutablesVersion = "2.9.3"
+		immutablesVersion = "2.10.0"
 		openServiceBrokerVersion = "3.6.1"
 		pmdVersion = "6.29.0"
 		springCredhubVersion = "2.3.0"