[skip ci] Update timeout to 70 minutes to run more test cases (#12547)

Signed-off-by: NJenny Li <jing.li@zilliz.com>

build/ci/jenkins/Jenkinsfile

 #!/usr/bin/env groovy
 
 int total_timeout_minutes = 120
-int e2e_timeout_seconds = 50 * 60
+int e2e_timeout_seconds = 70 * 60
 
 pipeline {
     agent none