update ci psql deps

Author: tanner0101

Tests/PostgreSQLTests/PostgreSQLConnectionTests.swift

@@ -360,7 +360,7 @@ extension PostgreSQLConnection {
         let client = try PostgreSQLConnection.connect(on: group) { error in
             XCTFail("\(error)")
         }.wait()
-        _ = try client.authenticate(username: "postgres").wait()
+        _ = try client.authenticate(username: "vapor_username", database: "vapor_database", password: "vapor_password").wait()
         return client
     }
 }

circle.yml

@@ -13,9 +13,9 @@ jobs:
       - image: norionomura/swift:swift-4.1-branch
       - image: circleci/postgres:latest
         environment:
-          POSTGRES_USER: postgres
-          POSTGRES_DB: postgres
-          POSTGRES_PASSWORD: ""
+          POSTGRES_USER: vapor_username
+          POSTGRES_DB: vapor_database
+          POSTGRES_PASSWORD: vapor_password
     steps:
       - run:
           name: Update APT
@@ -39,9 +39,9 @@ jobs:
       - image: norionomura/swift:swift-4.1-branch
       - image: circleci/postgres:latest
         environment:
-          POSTGRES_USER: postgres
-          POSTGRES_DB: postgres
-          POSTGRES_PASSWORD: ""
+          POSTGRES_USER: vapor_username
+          POSTGRES_DB: vapor_database
+          POSTGRES_PASSWORD: vapor_password
     steps:
       - run:
           name: Update APT