Update layout.html.twig

[PeopleInside]

Security fix related to https://github.com/uvdesk/community-skeleton/issues/311

1. Why is this change necessary?

For fix security issues

2. What does this change do, exactly?

Update bootstrap and jQuery and the necessary components.

[PeopleInside]

The update seems broke the branding link page. Is no more possible to add or remove links.

The browser console say:

jQuery.Deferred exception: e is undefined d</se.selectors.pseudos.not<@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:16955
PSEUDO@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:16719
Ee@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:20856
d</se.compile@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:21750
d</se.select@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:22965
se@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:7089
d</se.matchesSelector@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:13178
add@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:40868
ke/<@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:40138
each@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:2976
each@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:1454
ke@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:40114
on@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:46741
delegate@https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min.js:1:15582
delegateEvents@https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min.js:1:15500
setElement@https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min.js:1:15196
_ensureElement@https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min.js:1:16148
e.View@https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min.js:1:14711
n@https://cdnjs.cloudflare.com/ajax/libs/backbone.js/1.3.3/backbone-min.js:1:22931
@https://helpdesk.mydomain.ext/it/opr/branding/theme:2446:26
e@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:30005
l/</t<@https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js:2:30307
 undefined jquery.min.js:2:31560

Uncaught TypeError: e is undefined
    jQuery 13
    Backbone 6
    <anonymous> theme:2446
    jQuery 2
jquery.min.js:2:16955

[PeopleInside]

The issue with my patch update is not only for the Branding link page but also Broadcast Message