[deps] rev collection, fixnum, markdown, tools

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

collection (https://github.com/dart-lang/collection/compare/e8d7e92..f309148):
  f309148  2023-11-08  Kevin Moore  Latest lints, require Dart 3.1, use mixin (#322)

fixnum (https://github.com/dart-lang/fixnum/compare/3279f5d..6b0888c):
  6b0888c  2023-11-08  Kevin Moore  Update to latest lints and fix (#122)

markdown (https://github.com/dart-lang/markdown/compare/efb73b3..3774ad0):
  3774ad0  2023-11-07  Kevin Moore  Fix formatting for latest Dart dev SDK (#565)
  da11847  2023-11-07  Mosc  Fix beginning of line detection in `AutolinkExtensionSyntax` (#555)

tools (https://github.com/dart-lang/tools/compare/d898ad1..dd46ef2):
  dd46ef2  2023-11-09  Elias Yishak  Enum + event constructor added for `flutterCommandResult` (#199)

Change-Id: I8aa33f52c8afd50b60b225ad890f3e82945bcc50
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/335303
Reviewed-by: Konstantin Shcheglov <scheglov@google.com>
Auto-Submit: Devon Carew <devoncarew@google.com>
Commit-Queue: Konstantin Shcheglov <scheglov@google.com>

DEPS

@@ -129,7 +129,7 @@ vars = {
   "characters_rev": "7633a16a22c626e19ca750223237396315268a06",
   "cli_util_rev": "500dffab6e00332c4c0b814359f06c8a9c3a5573",
   "clock_rev": "f975668839f45bad561d6227f88297bbbcff03fa",
-  "collection_rev": "e8d7e925cc3d48d16d7455de6ac8484ecad46bda",
+  "collection_rev": "f309148623c4755ce9d6c00850092458325058ca",
   "convert_rev": "35031701fab532ada1a75c51155c0a6801055d88",
   "crypto_rev": "f3e64d234416466683e29a4b20cf751684cbae6a",
   "csslib_rev": "17346e528b19c09b2d20589e0ffa0f01a5ad54ad",
@@ -148,7 +148,7 @@ vars = {
   "ecosystem_rev": "dda788671e943525b7393f7e2430de38e73c03dc",
   "ffi_rev": "c926657618443ff4821411ede01684096b503f84",
   "file_rev": "cd3a9324f6483f313ba1f0f3ff382ea4e6982ef2",
-  "fixnum_rev": "3279f5d2a7b01eb315dc0f6cbae57cae8cee35e4",
+  "fixnum_rev": "6b0888c96554136e4f4ecf03cc52359b1974ede2",
   "flute_rev": "f42b09f77132210499ec8ed819a60c260af03db6",
   "glob_rev": "7c9a121e92687b7ac6456ec0796eb1e5c0373d90",
   "html_rev": "06bc148600b1d1a70f2256bdf788c213f1f60f55",
@@ -160,7 +160,7 @@ vars = {
   "leak_tracker_rev": "d3c9060d082ff4913c12ed1a5f47dbb2a93f4639",
   "lints_rev": "f58fd77bbff4ff4a62826a7bbfb9a72f0f03dd3c",
   "logging_rev": "324a0b5fd2b49b80ea4fbe2b48aac7794000e25a",
-  "markdown_rev": "efb73b3db22f47925d942d3ad1a0cdcd6dece944",
+  "markdown_rev": "3774ad02e812ceeb32ad0d98a987b0acffa63cf6",
   "matcher_rev": "3d03fa1a3e8f166b9e2ec8557c5d5e83ae1c85bc",
   "material_color_utilities_rev": "799b6ba2f3f1c28c67cc7e0b4f18e0c7d7f3c03e",
   "mime_rev": "8ebf9463a7a230213cee0adc3c019dad78d364ac",
@@ -183,11 +183,11 @@ vars = {
   "sync_http_rev": "d8e9f3de7be658b1c00d5b65aecba8640fc4ce46",
   "tar_rev": "3383397b082c084c327587a293591fac74bc8af3",
   "term_glyph_rev": "7c1eb9d799a3cbbc554c3a283af4d6cee9043297",
-  "test_rev": "075faffb08873fbc6d105f08408c426b6ab54b09", # https://github.com/dart-lang/test/issues/2126
+  "test_rev": "075faffb08873fbc6d105f08408c426b6ab54b09",
   "test_descriptor_rev": "c417cbb6498ba6d3ac6f7b14fdc43aefc212ab2e",
   "test_process_rev": "c21e40d7c06c862d14b1f53651ae0bd3cf81ca44",
   "test_reflective_loader_rev": "17d40bb06f55f727a79c0f0016d7510294f5db03",
-  "tools_rev": "d898ad12eccd19bb15d57df4493f9f449b9ab842",
+  "tools_rev": "dd46ef2d48a674bd7aef19b7a267c69470656492",
   "typed_data_rev": "0b16bd26c90bc9ac08e8b4b259aa3d7bead34feb",
   "usage_rev": "e99690ae6d5fa9ec24ac5218bcd3621e8e3ae8a9",
   "vector_math_rev": "294896dedc6da2a736f47c3c6a19643df934641c",