Update the variant to confrim for creating snippets

app/assets/javascripts/snippets/components/edit.vue

@@ -230,7 +230,7 @@ export default {
           <gl-button
             category="primary"
             type="submit"
-            variant="success"
+            variant="confirm"
             :disabled="updatePrevented"
             data-qa-selector="submit_button"
             data-testid="snippet-submit-btn"

app/assets/javascripts/snippets/components/snippet_header.vue

@@ -113,7 +113,7 @@ export default {
           href: this.snippet.project
             ? joinPaths(this.snippet.project.webUrl, '-/snippets/new')
             : joinPaths('/', gon.relative_url_root, '/-/snippets/new'),
-          variant: 'success',
+          variant: 'confirm',
           category: 'secondary',
         },
         {

spec/frontend/snippets/components/snippet_header_spec.js

@@ -252,7 +252,7 @@ describe('Snippet header component', () => {
           disabled: false,
           href: `/foo/-/snippets/new`,
           text: 'New snippet',
-          variant: 'success',
+          variant: 'confirm',
         },
       ]),
     );