wongma7: Update helm manifest for 1.15

JobBuild
327
08-06 20:30
pull-aws-ebs-csi-driver-e2e-multi-az 1159228618702852100 1159166202820431873 1158837652535906305
pull-aws-ebs-csi-driver-e2e-single-az 1159228618702852099 1159217292010065927 1159196783260209153 1159166202820431872 1158837652514934785
pull-aws-ebs-csi-driver-integration 1159268252661059584 1159228618702852098 1159196783260209152 1159166202816237570 1158837652535906304
pull-aws-ebs-csi-driver-sanity 1159228618702852097 1159166202816237571 1158837652531712001
pull-aws-ebs-csi-driver-unit 1159228618698657793 1159166202816237568 1158837652540100609
pull-aws-ebs-csi-driver-verify 1159228618702852096 1159166202816237569 1158837652540100608