[deps] rev tools, web

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

tools (https://github.com/dart-lang/tools/compare/319be98..4254267):
  4254267d  2025-09-11  Devon Carew  Update gemini config.yaml (dart-lang/tools#2162)
  6cb8f0f7  2025-09-11  Devon Carew  Update README.md (dart-lang/tools#2161)

web (https://github.com/dart-lang/web/compare/e2daa3a..25a0b5b):
  25a0b5b  2025-09-14  Nikechukwu  [interop] Add support for Conditional and Predicate Types (dart-lang/web#468)

Change-Id: I067ce2b7b48b2f57c145d49e2dad2dd2653ffb82
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/449581
Auto-Submit: Devon Carew <[email protected]>
Commit-Queue: Konstantin Shcheglov <[email protected]>
Reviewed-by: Konstantin Shcheglov <[email protected]>

Author: devoncarew

DEPS

@@ -147,9 +147,9 @@ vars = {
   "sync_http_rev": "6666fff944221891182e1f80bf56569338164d72",
   "tar_rev": "13479f7c2a18f499e840ad470cfcca8c579f6909",
   "test_rev": "b99d556ec6096965eb177111299c0783678200f6",
-  "tools_rev": "319be98ae558cb218816f0c2aca798dcd6ee8370",
+  "tools_rev": "4254267d4aa8e4e9c2fa4e0113975d21857aa9e4",
   "vector_math_rev": "3939545edc38ed657381381d33acde02c49ff827",
-  "web_rev": "e2daa3acca4cfee4442ae3cff7abab39e87ffb70",
+  "web_rev": "25a0b5b0a4a126788c06738331c5c4af8225f6f8",
   "webdev_rev": "23aefebea46c1f94c27703743b2c8db1f651bf29",
   "webdriver_rev": "09104f459ed834d48b132f6b7734923b1fbcf2e9",
   "webkit_inspection_protocol_rev": "effa75205516757795683d527c3dea9546eb0c32",