[co19] Roll co19_2 to 9f28a5f173bd39c9b97a691e7abcba6fdf80b47b

2022-12-01 [email protected] Fixes dart-lang/co19#1565. FallThroughError tests removed (dart-lang/co19#1567)
2022-11-14 [email protected] dart-lang/co19#1540. Tests error expectations updated (dart-lang/co19#1544)

Change-Id: I4f4904e3c1e002230f4c47c5236fe0f93b18fc8b
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/273220
Reviewed-by: Erik Ernst <[email protected]>
Commit-Queue: Michael Thomsen <[email protected]>
Reviewed-by: Alexander Thomas <[email protected]>

Author: mit-mit

DEPS

@@ -53,7 +53,7 @@ vars = {
   # hashes.
   "co19_rev": "7d8ce35e4263b14e2fb79c60d34dc00851b14215",
   # This line prevents conflicts when both packages are rolled simultaneously.
-  "co19_2_rev": "cdab7e4e26f3dd534bcb297ff3f9e9aa5c7a04fb",
+  "co19_2_rev": "9f28a5f173bd39c9b97a691e7abcba6fdf80b47b",
 
   # The internal benchmarks to use. See go/dart-benchmarks-internal
   "benchmarks_internal_rev": "599aa474a03c37be146f82dfbad85f34f25ffa47",