Pin the jquery version to 2.1.4

[ChristophWurst]

v2.2.x behaves different in terms of when the page is ready. See #13496 (comment) for more detail. Apparently 7207a77 updated jquery accidentally.

Fixes#14556

[ChristophWurst]

How to test: run npm ls jquery on master and this branch ;)

[faily-bot]

🤖 beep boop beep 🤖

Here are the logs for the failed build:

Status of 16815: failure

TESTS=acceptance, TESTS-ACCEPTANCE=app-files

• cancelled - typically means that the tests took longer than the drone CI allows them to run

TESTS=acceptance, TESTS-ACCEPTANCE=apps

• tests/acceptance/features/apps.feature:75

Show full log

 Scenario: View app details for app store apps # /drone/src/github.com/nextcloud/server/tests/acceptance/features/apps.feature:75
Given I act as Jane # ActorContext::iActAs()
And I am logged in as the admin # LoginPageContext::iAmLoggedInAsTheAdmin()
And I open the Apps management # SettingsMenuContext::iOpenTheAppsManagement()
And I open the "Tools" section # AppNavigationContext::iOpenTheSection()
Tools section item in App Navigation could not be found after 100 seconds (NoSuchElementException)
When I click on the "Antivirus for files" app # AppsManagementContext::iClickOnTheApp()
Then I see that the app details are shown # AppsManagementContext::iSeeThatTheAppDetailsAreShown()