update attrs-py3 to 24.2.0.

Context: https://chromium-review.googlesource.com/c/chromium/src/+/6222572

Change-Id: Ia76c79e470d2c7906e7bc12f06209f5054eda3b9
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6230459
Reviewed-by: Haiyang Pan <[email protected]>
Commit-Queue: Arthur Wang <[email protected]>
Reviewed-by: Farid (Mojtaba) Faridzad <[email protected]>
Reviewed-by: Ben Pastene <[email protected]>
Cr-Commit-Position: refs/heads/main@{#1416414}
diff --git a/.vpython3 b/.vpython3
index a3cb9aa..eea0f975 100644
--- a/.vpython3
+++ b/.vpython3
@@ -423,37 +423,37 @@
   version: "version:2.0.1"
 >
 
-wheel <
+wheel: <
   name: "infra/python/wheels/pytest-py3"
   version: "version:7.3.1"
 >
 
-wheel <
+wheel: <
   name: "infra/python/wheels/pytest-asyncio-py3"
   version: "version:0.19.0"
 >
 
-wheel <
-  name: "infra/python/wheels/attrs-py2_py3"
-  version: "version:21.4.0"
+wheel: <
+  name: "infra/python/wheels/attrs-py3"
+  version: "version:24.2.0"
 >
 
-wheel <
+wheel: <
   name: "infra/python/wheels/more-itertools-py2_py3"
   version: "version:4.1.0"
 >
 
-wheel <
+wheel: <
   name: "infra/python/wheels/pluggy-py3"
   version: "version:0.13.1"
 >
 
-wheel <
+wheel: <
   name: "infra/python/wheels/py-py2_py3"
   version: "version:1.10.0"
 >
 
-wheel <
+wheel: <
   name: "infra/python/wheels/funcsigs-py2_py3"
   version: "version:1.0.2"
 >