Upgrade git to 2.30.2 for bleeding edge

R=ehmaldonado@chromium.org

Bug: 1187284
Change-Id: I79c8e10840f499063f5c3d1b4f3e92d8774eb011
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/2774092
Auto-Submit: Josip Sokcevic <sokcevic@google.com>
Commit-Queue: Edward Lesmes <ehmaldonado@chromium.org>
Reviewed-by: Edward Lesmes <ehmaldonado@chromium.org>

bootstrap/manifest_bleeding_edge.txt

@@ -24,4 +24,4 @@ infra/3pp/tools/cpython/${platform} version:2.7.17.chromium.22
 infra/3pp/tools/cpython3/${os}-${arch=amd64} version:3.8.0.chromium.8
 
 @Subdir git
-infra/3pp/tools/git/${os}-${arch} version:2.28.0.chromium.6
+infra/3pp/tools/git/${os}-${arch} version:2@2.30.2.chromium.6