Add dependencies to the Go toolchain for bazel_go_example_test.

These were removed from srcs earlier (as they are not sources), but
they're necessary to run the e2e test.

--
MOS_MIGRATED_REVID=108042063
diff --git a/src/test/shell/bazel/BUILD b/src/test/shell/bazel/BUILD
index fc2472d..9e121ce 100644
--- a/src/test/shell/bazel/BUILD
+++ b/src/test/shell/bazel/BUILD
@@ -87,6 +87,8 @@
     data = [
         ":test-deps",
         "//tools/build_rules/go:srcs",
+        "//tools/build_rules/go/toolchain",
+        "//tools/build_rules/go/toolchain:go_tool",
         "//tools/build_rules/go/toolchain:srcs",
         "//tools/build_rules/go/tools:srcs",
     ],