Merge pull request alephdata#602 from alephdata/dependabot/pip/icalendar-5.0.12

Bump icalendar from 5.0.11 to 5.0.12

Author: stchris

requirements.txt

@@ -32,7 +32,7 @@ olefile==0.47
 Pillow==10.1.0
 vobject==0.9.6.1
 msglite==0.30.0
-icalendar==5.0.11
+icalendar==5.0.12
 
 cryptography==41.0.7
 requests[security]==2.31.0