add news for 2025-07-30 and update top level Makefile

Added news for **2025-07-30** with the  scheduled the date for the IOCCC
Awards Presentation and Source Code Reveal for IOCCC28 to be on 2025
August 02 11:00 (11AM) Pacific.

We add `make news` to the top level `Makefile.

Ran `make news timestamp` to perform the above.

status.json

@@ -2,6 +2,6 @@
     "no_comment" : "mandatory comment: because comments were removed from the original JSON spec",
     "IOCCC_status_version" : "1.0 2024-03-09",
     "contest_status" : "judging",
-    "news_update" : "2025-07-26T09:01:09+00:00",
+    "news_update" : "2025-07-31T04:20:41+00:00",
     "status_update" : "2025-06-05T03:42:18+00:00"
 }