(2.1.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] <[email protected]>

Author: dependabot[bot]

build.gradle

@@ -21,7 +21,7 @@ buildscript {
 		blockHoundVersion = "1.0.8.RELEASE"
 		cfJavaClientVersion = "5.10.0.RELEASE"
 		commonsTextVersion = "1.10.0"
-		immutablesVersion = "2.9.3"
+		immutablesVersion = "2.10.0"
 		openServiceBrokerVersion = "4.1.0-RC1"
 		springFrameworkVersion = "6.0.0"
 		wiremockVersion = "3.2.0"