Bump opium to remove dependency on postgresql-libpq

app/Main.hs

@@ -2,13 +2,13 @@
 
 module Main (main) where
 
-import Database.PostgreSQL.LibPQ (connectdb)
+import qualified Database.PostgreSQL.Opium as Opium
 
 import qualified Yore.DB
 
 main :: IO ()
 main = do
-  conn <- connectdb "host=localhost port=5432"
+  conn <- Opium.connect "host=localhost port=5432"
   result <- Yore.DB.getTables conn
 
   case result of