Upgrade zlib to 9d0985a0c5115f95c89cb29a815f77381979322d

This project was upgraded with external_updater.
Usage: tools/external_updater/updater.sh update external/zlib
For more info, check https://cs.android.com/android/platform/superproject/main/+/main:tools/external_updater/README.md

Bug: None
Test: TreeHugger
Change-Id: I579bebeeadc7525bc29112ace7da47ff05e1f1a5