db.d: reduce busy_timeout to 5 seconds

Feels like a better balance between allowing write operations to
complete vs not waiting too long on a database that an external
application has locked for editing.

Author: mathiascode

src/db.d

@@ -115,7 +115,7 @@ final class Database
         query("PRAGMA synchronous = NORMAL;");
         query("PRAGMA foreign_keys = ON;");
         query("PRAGMA secure_delete = ON;");
-        query("PRAGMA busy_timeout = 10000;");  // 10 seconds
+        query("PRAGMA busy_timeout = 5000;");  // 5 seconds
 
         if (log_db) check_integrity();