Update jQuery to fix prototype pollution vulnerability < 3.4.0

[toeikmei]

There is a vulnerability in jquery:
https://snyk.io/vuln/SNYK-JS-JQUERY-174006

CVSS score: 5.6
Severity: medium

All versions prior to jQuery version 3.4.0 have a prototype pollution vulnerability.
Since the currently used jQuery version in jupyter notebooks is 3.3.1 updating would make sense, additionally the version udpate has no breaking changes.

https://blog.jquery.com/2019/04/10/jquery-3-4-0-released/

[haobibo]

GitHub keeps send me alerts for the jquery security issue:

https://nvd.nist.gov/vuln/detail/CVE-2019-11358

[haobibo]

#4958