fix: ensure correct UTC time verification in calendar entry tests

Updated assertions in CalendarServiceTests to verify event start times in UTC, avoiding discrepancies due to local time zone differences. Adjusted tests for single event parsing and biweekly occurrences to reflect accurate UTC conversion.

Author: supermem613

tests/ComingUpNextTray.Tests/CalendarServiceTests.cs

@@ -15,7 +15,8 @@ public void ParseIcs_ParsesSingleEvent() {
             IReadOnlyList<Models.CalendarEntry> result = CalendarService.ParseIcs(ics);
             Models.CalendarEntry evt = Assert.Single(result);
             Assert.Equal("Test Meeting", evt.Title);
-            Assert.Equal(new DateTime(2025, 1, 1, 10, 0, 0, DateTimeKind.Utc).ToLocalTime().Hour, evt.StartTime.Hour);
+            // Verify time in UTC to avoid time zone differences
+            Assert.Equal(10, evt.StartTime.ToUniversalTime().Hour);
             // Uri normalization adds trailing slash to bare host; expect slash
             Assert.Equal("https://example.com/", evt.MeetingUrl?.ToString());
         }
@@ -151,9 +152,11 @@ public void ParseIcs_RRULEWithUntilOnTuesday_GeneratesTuesdayWhenWeekStartsLater
                 e.Title == "FAB Eng Sync");
 
             Assert.NotNull(tuesdayOccurrence);
-            // Verify it's the correct time (14:35 PST = 17:35 EST in standard time)
-            Assert.Equal(17, tuesdayOccurrence.StartTime.Hour); // 5 PM hour
-            Assert.Equal(35, tuesdayOccurrence.StartTime.Minute);
+            // Verify it's the correct time (14:35 PST = 22:35 UTC)
+            // Convert to UTC to avoid time zone differences between local and CI
+            DateTime startUtc = tuesdayOccurrence.StartTime.ToUniversalTime();
+            Assert.Equal(22, startUtc.Hour);
+            Assert.Equal(35, startUtc.Minute);
         }
 
         [Fact]