Add warning about emails being lost (#486)

Co-authored-by: Amy <a258wang@uwaterloo.ca>
Reviewed-on: #486
Reviewed-by: Raymond Li <raymo@csclub.uwaterloo.ca>

content/warnings/warnings.json

@@ -13,5 +13,10 @@
 		"startDate": "June 13 2022 00:00",
 		"endDate": "June 15 2022 22:00",
 		"message": "CSC machines will have their software updated and will momentarily go offline at 6pm EST on Wednesday, June 15, 2022"
+	},
+	{
+		"startDate": "Aug 1 2022 00:00",
+		"endDate": "Aug 8 2022 0:00",
+		"message": "Emails sent from any UWaterloo address to syscom@csclub.uwaterloo.ca and exec@csclub.uwaterloo.ca are currently being lost to the void. Syscom is currently investigating this issue. If you need to email us, either do it from an email address not ending in @uwaterloo.ca. or send it to one of the following emails: systems-committee@csclub.uwaterloo.ca, executive@csclub.uwaterloo.ca"
 	}
-]
+]