Upgrade shFlags to 96694d58ce92065fdd8f8761d930765cb9a8d066 am: 5d4901c381 am: 2206f74b00

Original change: https://android-review.googlesource.com/c/platform/external/shflags/+/3237405

Change-Id: I8dae68d7ec5e87faf922cfe2b5c384df2974a896
Signed-off-by: Automerger Merge Worker <[email protected]>