Bazel overlay: rename 'deps' to 'module_deps'.

'deps' is a module prop used by some module types, like
prebuilt_build_tool:

https://cs.android.com/android/platform/superproject/+/master:build/soong/android/prebuilt_build_tool.go;l=25-26;drc=751ae87ed29c67629f068a8590af80023a457294



Use `module_deps` to prevent conflicts in the generated overlay
attributes.

Bug: 162720644
Test: m bazel_overlay && cd out/soong/bazel_overlay && bazel cquery
//...
Test: soong_build tests

Signed-off-by: Jingwen Chen <jingwen@google.com>
Change-Id: Ia075a860983960b2d9121d30ead8f808be7e0c5b