Increase size of //src/test/shell/bazel:maven_test

It is timeout flaky.

--
MOS_MIGRATED_REVID=103379536

src/test/shell/bazel/BUILD

diff --git a/src/test/shell/bazel/BUILD b/src/test/shell/bazel/BUILD
index 22ad141..1b606b7 100644
--- a/src/test/shell/bazel/BUILD
+++ b/src/test/shell/bazel/BUILD
@@ -169,6 +169,7 @@
 
 sh_test(
     name = "maven_test",
+    size = "large",
     srcs = ["maven_test.sh"],
     data = [":test-deps"],
 )