cabal: Also increase transformers version in the tests#19

Gabriella439 merged 2 commits intoGabriella439:mainGabriella439/Haskell-Pipes-Extras-Library:mainfrom

rvl:cabal-bounds-transformersrvl/fork_Haskell-Pipes-Extras-Library:cabal-bounds-transformersCopy head branch name to clipboard