Performance test suite data is out of date

[stephencelis]

We've been working on a query builder and this repo has been helpful to benchmark its decoding against, so thanks for providing it!

I did note that when bumping dependencies I get quite a different output, where SQLite.swift is much more in line with GRDB in performance:

Orders.fetchAll            setup    rampup   duration
  Enlighter SQLite         0.002    0.185    8.891   
  Lighter                  0        0.216    10.545  
  GRDB(manu)               0.001    0.486    23.592  
  SQLite.swift(manu)       0        0.715    35.71   
  SQLite.swift             0        1.18     56.223  
  GRDB                     0.002    1.407    69.238  

I'm not an active maintainer of SQLite.swift anymore, but I'm sure those that do maintain it would appreciate an update here 😄