ci(travi): switch to vm-based ppc64le

Signed-off-by: Rifa Achrinza <25147899+achrinza@users.noreply.github.com>

Author: achrinza

.travis.yml

@@ -3,9 +3,7 @@ branches:
     - master
 language: node_js
 dist: jammy
-arch:
-  - ppc64le
-  - s390x
+os: linux-ppc64le
 cache:
   npm: true
 services:
@@ -21,7 +19,6 @@ env:
     DB2_VERSION=:11.5.9.0@sha256:77095d4e04cf4448c0257086afcb2c166193d718dc33441da3b949f97e21efd5
 install: skip
 script: |
-  set -euv
   case "$JOB" in
     test)
       ./cicd/well-known/test-harness.sh