feat: SearchPage - added key property to list items

frontend/src/components/SearchPage.tsx

@@ -266,7 +266,7 @@ export const SearchPage = () => {
               >
                 {categories.map((category: CategoryIO) => {
                   return (
-                    <Option value={category.id}>
+                    <Option key={category.id} value={category.id}>
                       {category.name}
                     </Option>
                   );
@@ -294,7 +294,7 @@ export const SearchPage = () => {
               >
                 {directors.map((director: DirectorIO) => {
                   return (
-                    <Option value={director.id}>
+                    <Option key={director.id} value={director.id}>
                       {`${director.name} ${director.surname}`}
                     </Option>
                   );