Migrate finch smoke test to python3

Bug: 1291047
Change-Id: Ic4c3dacada8047a6de3276657a02a4fe06de1e40
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3418459
Reviewed-by: Takuto Ikuta <[email protected]>
Reviewed-by: Stephen Martinis <[email protected]>
Reviewed-by: Dirk Pranke <[email protected]>
Commit-Queue: Arthur Wang <[email protected]>
Cr-Commit-Position: refs/heads/main@{#966564}
diff --git a/.vpython3 b/.vpython3
index 5390a9c..83879a4 100644
--- a/.vpython3
+++ b/.vpython3
@@ -394,3 +394,10 @@
     platform: "linux_aarch64"
   >
 >
+
+# Used by:
+#   testing/script/run_variations_smoke_tests.py
+wheel: <
+  name: "infra/python/wheels/selenium-py3"
+  version: "version:3.14.0"
+>