Update Smart Menus version

[laryn]

Description of the need

I was searching for something related to Smart Menus and noticed that there have been tags since the version that is included in Backdrop core. We ship with 1.1.0 and there is a 1.1.1 version as well as a 1.2.1 since then.

https://github.com/vadikom/smartmenus/tags

We should assess whether and which to update to.

[klonos]

Collating the list of changes in the various versions, to help us figure out if there's been any breaking change:

1.1.1 (compare commits from 1.1.0)

• Update demos with Bootstrap 4.5.0
• fix: Mouse input not detected correctly on Windows when pointer speed is set to any of the fastest 2 options and additionally "Enhance pointer precision" is unchecked
• fix: Avoid Content Security Policy issue when valid JSON is used as "data-sm-options" value Avoiding Content Security Policy issue? vadikom/smartmenus#88
• fix: "showOnClick: true" should not affect collapsible mode behavior in any way
• fix: Remove SHJS syntax highlighter source code from the repo
• fix: Problem with markCurrentTree in megamenu Problem with markCurrentTree in megamenu vadikom/smartmenus#86
• fix: Uncaught TypeError when clicking on items (that do not have a sub menu in certain cases) in collapsible mode

1.2.0 (compare commits from 1.1.1)

• Support only valid JSON format for the value of the "data-sm-options" attribute and do not use eval() to parse it.

1.2.1 (compare commits from 1.2.0)

• Bump Bootstrap 4 Addon version

[laryn]

I understand that there is a Smart Menus v2 coming out at some point (soon?):

• [A11Y] aria-current on active menu item vadikom/smartmenus#239

[laryn]

In the meantime v2.0.0-alpha.1 has been released.