chore(pipeline): don't use s390x permanent agent (#2185)

Author: lemeurherve

Jenkinsfile

@@ -18,9 +18,9 @@ def envVars = ['PUBLISH=true']
 def architecturesAndCiJioAgentLabels = [
     'amd64': 'docker && amd64',
     'arm64': 'arm64docker',
-    // No corresponding agent, using qemu
+    // Using qemu
     'ppc64le': 'docker && amd64',
-    's390x': 's390xdocker',
+    's390x': 'docker && amd64',
 ]
 
 // Set to true in a replay to simulate a LTS build on ci.jenkins.io