Replace blank with _blank in target attribute

app/assets/javascripts/clusters/components/application_row.vue

@@ -307,7 +307,7 @@ export default {
           <a
             v-if="titleLink"
             :href="titleLink"
-            target="blank"
+            target="_blank"
             rel="noopener noreferrer"
             class="js-cluster-application-title"
             >{{ title }}</a

app/assets/javascripts/diffs/components/diff_file_header.vue

@@ -285,7 +285,7 @@ export default {
           ref="viewButton"
           v-gl-tooltip.hover
           :href="diffFile.view_path"
-          target="blank"
+          target="_blank"
           class="view-file"
           data-track-event="click_toggle_view_sha_button"
           data-track-label="diff_toggle_view_sha_button"

app/assets/javascripts/lib/utils/url_utility.js

@@ -166,7 +166,7 @@ export const setUrlFragment = (url, fragment) => {
 
 export function visitUrl(url, external = false) {
   if (external) {
-    // Simulate `target="blank" rel="noopener noreferrer"`
+    // Simulate `target="_blank" rel="noopener noreferrer"`
     // See https://mathiasbynens.github.io/rel-noopener/
     const otherWindow = window.open();
     otherWindow.opener = null;

ee/app/assets/javascripts/analytics/code_review_analytics/components/merge_request_table.vue

@@ -122,7 +122,7 @@ export default {
     </template>
 
     <template #cell(author)="{ value }">
-      <gl-avatar-link v-gl-tooltip target="blank" :href="value.web_url" :title="value.name">
+      <gl-avatar-link v-gl-tooltip target="_blank" :href="value.web_url" :title="value.name">
         <gl-avatar :size="24" :src="value.avatar_url" :entity-name="value.name" />
       </gl-avatar-link>
     </template>

ee/app/assets/javascripts/environments/components/deploy_board_component.vue

@@ -116,7 +116,7 @@ export default {
     <template v-else>
       <div v-if="hasLegacyAppLabel" class="bs-callout bs-callout-warning mb-0 mt-0">
         <span v-html="legacyLabelWarningMessage"></span>
-        <gl-link target="blank" :href="deployBoardsHelpPath">
+        <gl-link target="_blank" :href="deployBoardsHelpPath">
           <strong>{{ __('More Information') }}</strong>
         </gl-link>
       </div>