Update Jenkins version to 2.89

Change-Id: I9c4efda86b2c0e6b6743e3055085f729d21b87cd
diff --git a/Dockerfile b/Dockerfile
index 729dda1..7a80fee 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -36,10 +36,10 @@
 
 # jenkins version being bundled in this docker image
 ARG JENKINS_VERSION
-ENV JENKINS_VERSION ${JENKINS_VERSION:-2.86}
+ENV JENKINS_VERSION ${JENKINS_VERSION:-2.89}
 
 # jenkins.war checksum, download will be validated using it
-ARG JENKINS_SHA=207aac187882bcddf665cdee78daa2fd8642f94c02d731b9ea18fdc985640ea5
+ARG JENKINS_SHA=e7551f166479b54135e2255f42decc2cce7a28150e3d345dd28c8e049486b71d
 
 # Can be used to customize where jenkins.war get downloaded from
 ARG JENKINS_URL=https://repo.jenkins-ci.org/public/org/jenkins-ci/main/jenkins-war/${JENKINS_VERSION}/jenkins-war-${JENKINS_VERSION}.war