cpython3 3.8.10.chromium.23 to depot_tools stable.

Bug: 1266174
Change-Id: If3d19efe562194b57ad2dd4213f68f627e5a464a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/3280374Reviewed-by: Dirk Pranke <dpranke@google.com>
Commit-Queue: Brian Ryner <bryner@google.com>

bootstrap/manifest.txt

@@ -21,7 +21,7 @@ $VerifiedPlatform windows-amd64 linux-amd64 mac-amd64 mac-arm64
 infra/3pp/tools/cpython/${platform} version:2@2.7.18.chromium.39
 
 @Subdir python3
-infra/3pp/tools/cpython3/${platform} version:2@3.8.10.chromium.20
+infra/3pp/tools/cpython3/${platform} version:2@3.8.10.chromium.23
 
 @Subdir git
 infra/3pp/tools/git/${platform} version:2@2.33.0.chromium.6