Roll Dart Documentation Generator from ed09195c559c to 446e0fd1f26b (3 revisions)

https://dart.googlesource.com/dartdoc/+log/ed09195c559c..446e0fd1f26b

2022-08-12 srawlins@google.com Tidy potentially applicable extensions (#3117)
2022-08-12 49699333+dependabot[bot]@users.noreply.github.com Bump github/codeql-action from 2.1.17 to 2.1.18 (#3109)
2022-08-12 srawlins@google.com Accept theirs in merge conflicts of generated files (#3118)

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dart-doc-dart-sdk
Please CC dart-ecosystem-gardener@grotations.appspotmail.com on the revert to ensure that a human
is aware of the problem.

To file a bug in Dart Documentation Generator: https://github.com/dart-lang/dartdoc/issues
To file a bug in Dart SDK: https://github.com/dart-lang/sdk/issues

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+doc/main/autoroll/README.md

Tbr: dart-ecosystem-gardener@grotations.appspotmail.com
Change-Id: I5ba63e0e8eaa9a2e400d5777f359f164ffb5b184
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/255002
Reviewed-by: Devon Carew <devoncarew@google.com>
Commit-Queue: DEPS Autoroller <dart-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: Devon Carew <devoncarew@google.com>

DEPS

@@ -108,7 +108,7 @@ vars = {
   # For more details, see https://github.com/dart-lang/sdk/issues/30164.
   "dart_style_rev": "49bc3ff32b5578b6e19f8fd376d668130941ee29", # manually rev'd
 
-  "dartdoc_rev": "ed09195c559c622290f653794736ae4aac1c7f0e",
+  "dartdoc_rev": "446e0fd1f26b47d2b0b48505f3ed8c9f48d22f57",
   "devtools_rev": "d131d19091f6b89ac89486bd92440a25a523e8b0",
   "ffi_rev": "18b2b549d55009ff594600b04705ff6161681e07",
   "file_rev": "0132eeedea2933513bf230513a766a8baeab0c4f",