[git] Update bootstrapped git version to 2.24 to match fleet.

R=ehmaldonado@chromium.org, tandrii@chromium.org, thakis@chromium.org

Bug: 1026340
Change-Id: I16b3e5452114cf8b33368c5721e7b53a5700c941
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/tools/depot_tools/+/1954210
Auto-Submit: Robbie Iannucci <iannucci@chromium.org>
Commit-Queue: Andrii Shyshkalov <tandrii@google.com>
Reviewed-by: Andrii Shyshkalov <tandrii@google.com>

bootstrap/manifest.txt

@@ -24,4 +24,4 @@ infra/python/cpython/${platform} version:2.7.15.chromium14
 infra/python/cpython3/${os}-${arch=amd64} version:3.8.0b1.chromium.1
 
 @Subdir git
-infra/git/${os}-${arch} version:2.21.0.chromium16
+infra/3pp/tools/git/${os}-${arch} version:2.24.0.chromium.4

bootstrap/manifest_bleeding_edge.txt

@@ -24,4 +24,4 @@ infra/python/cpython/${platform} version:2.7.15.chromium14
 infra/python/cpython3/${os}-${arch=amd64} version:3.8.0b1.chromium.1
 
 @Subdir git
-infra/git/${os}-${arch} version:2.23.0.chromium16
+infra/3pp/tools/git/${os}-${arch} version:2.24.0.chromium.4