chore: increase columns length in .stylish-haskell.yaml

This gives the import statements more space, essentially, it collectively
removes 90+ unneeded lines in the imports statements.

Signed-off-by: Taimoor Zaeem <taimoorzaeem@gmail.com>

test/spec/Main.hs

@@ -9,8 +9,7 @@ import Data.Function (id)
 import Test.Hspec
 
 import PostgREST.App             (postgrest)
-import PostgREST.Config          (AppConfig (..),
-                                  toConnectionSettings)
+import PostgREST.Config          (AppConfig (..), toConnectionSettings)
 import PostgREST.Config.Database (queryPgVersion)
 import PostgREST.SchemaCache     (querySchemaCache)
 import Protolude                 hiding (toList, toS)