chore(deps): bump calendar-js to 8.0.0

[st3iny]

Major release for @nextcloud/calendar-js is pending.

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 23.60%. Comparing base (afa403f) to head (c310389).
Report is 5 commits behind head on main.

Files	Patch %	Lines
src/components/Shared/TimezoneSelect.vue	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##               main    #6050      +/-   ##
============================================
- Coverage     29.29%   23.60%   -5.69%     
+ Complexity      914      457     -457     
============================================
  Files           287      246      -41     
  Lines         13987    11716    -2271     
  Branches       2151     2140      -11     
============================================
- Hits           4098     2766    -1332     
+ Misses         9574     8636     -938     
+ Partials        315      314       -1     

Flag	Coverage Δ
javascript	15.18% <0.00%> (ø)
php	58.65% <ø> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.