fix(Jenkins yaml) move utils sidecar from volumes to containers in ghpr_check2 pod (#4379)
Some tidb pod templates incorrectly defined the `utils` sidecar under `spec.volumes` (with container-only fields like image/tty/resources), which breaks pod deserialization in Jenkins/Fabric8 (e.g. ImageVolumeSource parse errors).
This change moves the `utils` block to `spec.containers` across affected templates, including release-7.5/release-8.1 ghpr_check2 and other similarly affected pod files. (commit: 73ef99c)