test: update search API request parameters and sequence numbers

- Update Combined Search and Filters: change has_cover to true, tags_filter to fic
- Update sequence numbers for all search requests (1-7)
- Ensure consistent request ordering in search folder

bruno/media-items/search/Search Specific Library.yml

@@ -1,7 +1,7 @@
 info:
   name: Search Specific Library
   type: http
-  seq: 15
+  seq: 7
 
 http:
   method: GET