sabre/vobject 3.3.2 release

We just released sabre/vobject 3.3.2.

Further in-depth testing of the iTip subsystem has revealed a lot of small edge-cases that weren't properly covered.

In addition, we now correctly decode ATTACH properties in iCalendar objects that are specified as a URI, and fixed a few validator rules.

Upgrade sabre/vobject by running:

composer update sabre/vobject

If this didn't upgrade you to 3.3.2, make sure that your composer.json file has a line that looks like this:

"sabre/vobject" : "~3.3.2"