Update vsock to 0.2.6 am: bc5a1c46a7 am: 12119859e2 am: eadfc342ff

Original change: https://android-review.googlesource.com/c/platform/external/rust/crates/vsock/+/2005052

Change-Id: I043a75863ce7428517cdb243d3a4844de23ea475