Update vsock to 0.2.6 am: bc5a1c46a7 am: 12119859e2 am: eadfc342ff am: 34c25bb318

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

Change-Id: Id63a991f3b6e994afd279be43b275a071e5d23b9