DTSTAMP must be specified in UTC

[Tragen]

DTSTAMP must be specified in UTC
See https://www.kanzaki.com/docs/ical/dtstamp.html

[codecov]

Codecov Report

Merging #432 into master will not change coverage.
The diff coverage is 100%.

@@            Coverage Diff            @@
##             master     #432   +/-   ##
=========================================
  Coverage     98.87%   98.87%           
  Complexity     1805     1805           
=========================================
  Files            65       65           
  Lines          5157     5157           
=========================================
  Hits           5099     5099           
  Misses           58       58

Impacted Files	Coverage Δ	Complexity Δ
lib/Component/VEvent.php	100% <100%> (ø)	11 <0> (ø)	⬇️
lib/Component/VJournal.php	100% <100%> (ø)	7 <0> (ø)	⬇️

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[staabm]

I am wondering, that we dont need to adjust a testcase. I guess this method is not covered.

@Tragen would you mind adding a testcase? dont worry if you dont feel confident enought to do it though.

[DeepDiver1975]

I am wondering, that we dont need to adjust a testcase. I guess this method is not covered.

php env has timezone set to utc? In this case this change would have no impact - right?

[evert]

You can't assume the timezone is set to UTC though. It's highly recommended but often not true.

[DeepDiver1975]

You can't assume the timezone is set to UTC though.

sure - my comment was about the fact that tests are passing with this change

[Tragen]

I'm sorry. I have no idea how to write the unit tests for sabre.
I was only checking why we had a wrong date and it was a simple fix.

I think we have some more bugs when the server isn't running with UTC.
We will test it and I will create new tickets then.

[staabm]

Ok, no problem. Thx for the PR though 🤟