Configure CI pipeline for 6.1.x milestone

Author: bclozel

ci/parameters.yml

@@ -4,7 +4,7 @@ sonatype-staging-profile: "org.springframework"
 docker-hub-organization: "springci"
 artifactory-server: "https://repo.spring.io"
 branch: "main"
-milestone: "6.0.x"
+milestone: "6.1.x"
 build-name: "spring-framework"
 pipeline-name: "spring-framework"
 concourse-url: "https://ci.spring.io"