added ReactNode to fix pipeline

Signed-off-by: JeevaRamanathan <jeevaramanathan.m@infosys.com>

plugins/scaffolder-react/src/next/components/TemplateCategoryPicker/TemplateCategoryPicker.tsx

@@ -14,7 +14,7 @@
  * limitations under the License.
  */
 
-import React from 'react';
+import React, { ReactNode } from 'react';
 import capitalize from 'lodash/capitalize';
 import { Progress } from '@backstage/core-components';
 import Box from '@material-ui/core/Box';
@@ -79,7 +79,7 @@ export const TemplateCategoryPicker = () => {
       </Typography>
       <Autocomplete<string, true>
         PopperComponent={popperProps => (
-          <div {...popperProps}>{popperProps.children}</div>
+          <div {...popperProps}>{popperProps.children as ReactNode}</div>
         )}
         multiple
         id="categories-picker"