Fix years in two advisories and add linter rule for years

announce/2024/mfsa2024-03.yml

@@ -1,5 +1,5 @@
 ## mfsa2024-03.yml
-announced: January 22, 2023
+announced: January 22, 2024
 impact: critical
 fixed_in:
 - Focus for iOS 122

announce/2024/mfsa2024-09.yml

@@ -1,5 +1,5 @@
 ## mfsa2024-09.yml
-announced: February 19, 2023
+announced: February 19, 2024
 impact: high
 fixed_in:
 - Focus for iOS 122

foundation_security_advisories/check_advisories.py

@@ -115,9 +115,11 @@ def check_file(file_name):
 
     if 'announced' in data:
         try:
-            parsedate(data['announced']).date()
+            date = parsedate(data['announced']).date()
         except Exception:
             return 'Failed to parse "{}" as a date'.format(data['announced'])
+        if not data['mfsa_id'].startswith(str(date.year)):
+            return 'Year mismatch between mfsa id ({}) and "announced" field ({})'.format(data['mfsa_id'], data['announced'])
 
     try:
         schema.validate(data)