feat: use hasql-pool-0.9, add db-pool-max-lifetime (fixes #2638)

- db-pool-acquisition-timeout is no longer optional, defaults to 10s
- new option db-pool-max-lifetime limits the maximal lifetime of a
  postgresql connection, defaults to 30m

src/PostgREST/AppState.hs

@@ -111,10 +111,11 @@ destroy = destroyPool
 
 initPool :: AppConfig -> IO SQL.Pool
 initPool AppConfig{..} =
-  SQL.acquire configDbPoolSize timeoutMicroseconds $ toUtf8 configDbUri
-  where
-    timeoutMicroseconds = (* oneSecond) <$> configDbPoolAcquisitionTimeout
-    oneSecond = 1000000
+  SQL.acquire
+    configDbPoolSize
+    (fromIntegral configDbPoolAcquisitionTimeout)
+    (fromIntegral configDbPoolMaxLifetime)
+    (toUtf8 configDbUri)
 
 -- | Run an action with a database connection.
 usePool :: AppState -> SQL.Session a -> IO (Either SQL.UsageError a)