chore: [jenkins-controller] Bump Jenkins test version in dockerfiles/... (#491)

... Dockerfile

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dockerfiles/Dockerfile

@@ -7,7 +7,7 @@ ARG JENKINS_VERSION=2.469-jdk17
 FROM jenkins/jenkins:${JENKINS_VERSION}
 
 # Define a specific Jenkins test version for testing purposes.
-ARG JENKINS_TEST_VERSION=2.470-rc35159.a_8c6151c5efa_
+ARG JENKINS_TEST_VERSION=2.470-rc35174.03a_0f7622771
 # Make the Jenkins test version available as an environment variable.
 ENV JENKINS_TEST_VERSION=$JENKINS_TEST_VERSION