Move card in billing page to gl-card utility class

changelogs/unreleased/yogi-gl-card-billing.yml

+---
+title: Move card in billing page to gl-card utility class
+merge_request: 59138
+author: Yogi (@yo)
+type: changed

ee/app/assets/javascripts/billings/subscriptions/components/subscription_table.vue

@@ -124,9 +124,12 @@ export default {
   <div>
     <div
       v-if="!isLoadingSubscription && !hasErrorSubscription"
-      class="card gl-mt-3 subscription-table js-subscription-table"
+      class="gl-card gl-mt-3 subscription-table js-subscription-table"
+    >
+      <div
+        class="gl-card-header gl-display-flex gl-justify-content-space-between gl-align-items-center"
+        data-testid="subscription-header"
       >
-      <div class="card-header" data-testid="subscription-header">
         <strong>{{ subscriptionHeader }}</strong>
         <div class="controls">
           <gl-button
@@ -143,7 +146,7 @@ export default {
         </div>
       </div>
       <div
-        class="card-body gl-display-flex gl-flex-column gl-sm-flex-direction-row flex-lg-column flex-grid"
+        class="gl-card-body gl-display-flex gl-flex-column gl-sm-flex-direction-row flex-lg-column flex-grid gl-p-0"
       >
         <subscription-table-row
           v-for="(row, i) in visibleRows"