remove https from channel thumbnail in search

src/invidious/helpers/helpers.cr

@@ -225,7 +225,7 @@ def extract_item(item : JSON::Any, author_fallback : String? = nil, author_id_fa
     author = i["title"]["simpleText"]?.try &.as_s || author_fallback || ""
     author_id = i["channelId"]?.try &.as_s || author_id_fallback || ""
 
-    author_thumbnail = i["thumbnail"]["thumbnails"]?.try &.as_a[0]?.try { |u| "https:#{u["url"]}" } || ""
+    author_thumbnail = i["thumbnail"]["thumbnails"]?.try &.as_a[0]?.try &.["url"]?.try &.as_s || ""
     subscriber_count = i["subscriberCountText"]?.try &.["simpleText"]?.try &.as_s.try { |s| short_text_to_number(s.split(" ")[0]) } || 0
 
     auto_generated = false