Case Sensitivity in Search Functionality within the Catalog Section

[elenalshv]

Steps to reproduce the bug:

1. Log in;
2. Go to the catalog section;
3. Go to the search bar and enter the query in uppercase;
4. Go to the search bar and enter the query in lower case;
5. Compare search results

The result obtained:

1. There is case sensitivity when searching in the Catalog section.

Expected behaviour:

1. There should be no case sensitivity when searching in the Catalog section.