catalog-import: replace trailing slash regexp with trimEnd

Signed-off-by: Johan Haals <johan.haals@gmail.com>

.changeset/purple-dodos-glow.md

@@ -4,6 +4,7 @@
 '@backstage/integration': patch
 '@backstage/plugin-catalog-backend-module-ldap': patch
 '@backstage/plugin-catalog-backend-module-msgraph': patch
+'@backstage/plugin-catalog-import': patch
 ---
 
 Replace slash stripping regexp with trimEnd to remove CodeQL warning

plugins/catalog-import/src/components/StepPrepareCreatePullRequest/PreviewCatalogInfoComponent.tsx

@@ -19,6 +19,7 @@ import { Card, CardContent, CardHeader } from '@material-ui/core';
 import React from 'react';
 import YAML from 'yaml';
 import { CodeSnippet } from '@backstage/core-components';
+import { trimEnd } from 'lodash';
 
 type Props = {
   repositoryUrl: string;
@@ -35,10 +36,7 @@ export const PreviewCatalogInfoComponent = ({
     <Card variant="outlined" className={classes?.card}>
       <CardHeader
         title={
-          <code>{`${repositoryUrl.replace(
-            /[\/]*$/,
-            '',
-          )}/catalog-info.yaml`}</code>
+          <code>{`${trimEnd(repositoryUrl, '/')}/catalog-info.yaml`}</code>
         }
       />