Exam add to calendar button fix

[DGoiana]

Closes #1016
Add2calendar version bump due to a bug in iOS 17.

Review checklist

• Terms and conditions reflect the current change
• Contains enough appropriate tests
• If aimed at production, writes a new summary in whatsnew/whatsnew-pt-PT
• Properly adds an entry in changelog.md with the change
• If PR includes UI updates/additions, its description has screenshots
• Behavior is as expected
• Clean, well-structured code

[codecov]

Codecov Report

Merging #1017 (f8e079d) into master (f200a5a) will not change coverage.
Report is 2 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@          Coverage Diff           @@
##           master   #1017   +/-   ##
======================================
  Coverage      16%     16%           
======================================
  Files         201     201           
  Lines        6361    6361           
======================================
  Hits          986     986           
  Misses       5375    5375