[deps] rev core, http, test

Revisions updated by `dart tools/rev_sdk_deps.dart`.

core (https://github.com/dart-lang/core/compare/2458e1a..a896913):
  a8969137  2025-02-06  Devon Carew  normalize the workflow files (dart-lang/core#857)

http (https://github.com/dart-lang/http/compare/c7cc4f8..b7cdf61):
  b7cdf61  2025-02-07  Vladislav  Fix Default Encoding for application/json Content-Type in HTTP Responses (dart-lang/http#1422)
  aadf836  2025-02-05  Brian Quinlan  Use the same Java/Kotlin versions as the flutter android template (dart-lang/http#1708)
  2e1a9a6  2025-02-05  Brian Quinlan  Upgrade to `jni`/`jnigen` 0.14.0 (dart-lang/http#1707)

test (https://github.com/dart-lang/test/compare/2ccfc5c..17609bf):
  17609bf9  2025-02-07  Kevin Moore  [test] allow the latest version of pkg:shelf_web_socket (dart-lang/test#2457)
  73d629d2  2025-02-06  Kevin Moore  Enable and fix unnecessary_ignore lint (dart-lang/test#2456)

Change-Id: Ie9f773289e94f04caeab10fb4902f78443292705
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/408861
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Auto-Submit: Devon Carew <devoncarew@google.com>

DEPS

@@ -130,12 +130,12 @@ vars = {
   # 'tools/rev_sdk_deps.dart' can rev pkg dependencies to their latest; put an
   # EOL comment after a dependency to disable this and pin it at its current
   # revision.
-  "core_rev": "2458e1aa4594a9c9bae98698e2addb2298c3312f",
+  "core_rev": "a896913715f2d8fb86d099b75dbfd02bf0d658a4",
   "dartdoc_rev": "e1295863b11c54680bf178ec9c2662a33b0e24be", # https://github.com/dart-lang/dartdoc/issues/3969
   "ecosystem_rev": "5b0d815952d81f5a51cc6a1af1cacab26f3a61d7",
   "flute_rev": "e4ea0459a7debae5e9592c85141707b01fac86c9",
   "glob_rev": "043796be996190473b397fa2fecfa34bb91376fb",
-  "http_rev": "c7cc4f8e19dd0a050fcf5654b120d789663c48e4",
+  "http_rev": "b7cdf6136926589210662bbdd71000e7abab7271",
   "intl_rev": "5d65e3808ce40e6282e40881492607df4e35669f",
   "leak_tracker_rev": "f5620600a5ce1c44f65ddaa02001e200b096e14c", # manually rolled
   "markdown_rev": "62f78c64d963ba6f73bd70ed65630dc934a264e6",
@@ -147,7 +147,7 @@ vars = {
   "shelf_rev": "2a7442f7d6d3e63fdc7b387128619b263dcb7e78",
   "sync_http_rev": "47e6b264a209d0d806cfe9cdad8b6c69ce231986",
   "tar_rev": "5a1ea943e70cdf3fa5e1102cdbb9418bd9b4b81a",
-  "test_rev": "2ccfc5cdba8e36b3939e26f09116d49aa12c76e8",
+  "test_rev": "17609bf90c9d5ef47707f5796763629450382474",
   "tools_rev": "3bdef2043af9244b804adc08896bf96d51bb49ba", # b/391934702
   "vector_math_rev": "533c513771d35312dcd0f69e662d729979882df1",
   "web_rev": "c2d5f63e9ea4c1409d6e159fc7b92dbcf4dc0d4d",