dependabot: Add config file.

.github/dependabot.yml

@@ -0,0 +1,10 @@
+# Please see the documentation for all configuration options:
+# https://help.github.com/github/administering-a-repository/configuration-options-for-dependency-updates
+
+version: 2
+updates:
+  - package-ecosystem: "npm"
+    directory: "/"
+    schedule:
+      interval: "weekly"
+    open-pull-requests-limit: 5

src/__flow-tests__/nav-test.js

@@ -8,7 +8,6 @@ import React, { type ComponentType } from 'react';
 import {
   createStackNavigator,
   type StackNavigationProp,
-  TransitionPresets,
 } from '@react-navigation/stack';
 
 import { type RouteProp, type RouteParamsOf } from '../react-navigation';

src/unread/unreadModelTypes.js

@@ -1,5 +1,5 @@
 /* @flow strict-local */
-import Immutable from 'immutable';
+import type Immutable from 'immutable';
 
 import type { HuddlesUnreadItem, PmsUnreadItem } from '../api/apiTypes';