[co19] Roll co19 to 2ba55b45d85fece505a503dd12cf1c708825b74f

2023-12-01 49699333+dependabot[bot]@users.noreply.github.com Bump actions/setup-java from 3.13.0 to 4.0.0 (dart-lang/co19#2410)
2023-12-01 sgrekhov22@gmail.com dart-lang/co19#2398. Update async tests to avoid false-positive results on web. Language and LanguageFeatures tests (dart-lang/co19#2407)
2023-12-01 sgrekhov22@gmail.com Fixes dart-lang/co19#2408. Fix roll failures (dart-lang/co19#2409)
2023-11-30 sgrekhov22@gmail.com dart-lang/co19#2398. Update asyncStart/End() to correspond SDK version. Replace asyncMultiTest (dart-lang/co19#2406)
2023-11-30 sgrekhov22@gmail.com dart-lang/co19#2398. Remove excessive async. Add explicit `void` (dart-lang/co19#2400)
2023-11-28 sgrekhov22@gmail.com dart-lang/co19#2350. Update existing factory constructor tests. Part 1 (dart-lang/co19#2353)
2023-11-28 sgrekhov22@gmail.com Fixes dart-lang/co19#2390. Add expected error to static_analysis_extension_types_A30_t02.dart (dart-lang/co19#2401)
2023-11-28 sgrekhov22@gmail.com Fixes dart-lang/co19#2399. Update expected errors locations for CFE (dart-lang/co19#2402)
2023-11-24 sgrekhov22@gmail.com dart-lang/co19#2388. Rename and reorder static_analysis_member_invocation_A06_t* tests (dart-lang/co19#2397)

Change-Id: Ie4b51caa12a9a0896c893cc02b099a07ef09fbd7
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/339560
Reviewed-by: Alexander Thomas <athom@google.com>
Reviewed-by: Erik Ernst <eernst@google.com>
Commit-Queue: Erik Ernst <eernst@google.com>

DEPS

@@ -55,7 +55,7 @@ vars = {
 
   # co19 is a cipd package automatically generated for each co19 commit.
   # Use tests/co19/update.sh to update this hash.
-  "co19_rev": "85c868a325bc92f4e743958077ad0ad2eb58c81f",
+  "co19_rev": "2ba55b45d85fece505a503dd12cf1c708825b74f",
 
   # The internal benchmarks to use. See go/dart-benchmarks-internal
   "benchmarks_internal_rev": "f048a4a853e3062056d39c3db100acdde42f16d6",