Bump spring-cloud-dependencies from Hoxton.SR10 to Hoxton.SR12

Bumps [spring-cloud-dependencies](https://github.com/spring-cloud/spring-cloud-build) from Hoxton.SR10 to Hoxton.SR12.
- [Release notes](https://github.com/spring-cloud/spring-cloud-build/releases)
- [Commits](https://github.com/spring-cloud/spring-cloud-build/commits)

---
updated-dependencies:
- dependency-name: org.springframework.cloud:spring-cloud-dependencies
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pom.xml

@@ -22,7 +22,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 		<java.version>1.8</java.version>
-		<spring-cloud.version>Hoxton.SR10</spring-cloud.version>
+		<spring-cloud.version>Hoxton.SR12</spring-cloud.version>
 		<docker.image.prefix>barrycommins</docker.image.prefix>
 		<docker.plugin.version>1.2.2</docker.plugin.version>
 	</properties>