Update to rustix 0.26.2. (#3521)

This pulls in a fix for Android, where Android's seccomp policy on older
versions is to make `openat2` irrecoverably crash the process, so we have
to do a version check up front rather than relying on `ENOSYS` to
determine if `openat2` is supported.

And it pulls in the fix for the link errors when multiple versions of
rsix/rustix are linked in.

And it has updates for two crate renamings: rsix has been renamed to
rustix, and unsafe-io has been renamed to io-extras.

crates/jit/Cargo.toml

@@ -29,10 +29,10 @@ bincode = "1.2.1"
 winapi = { version = "0.3.8", features = ["winnt", "impl-default"] }
 
 [target.'cfg(target_os = "linux")'.dependencies]
-rsix = { version = "0.23.0", optional = true }
+rustix = { version = "0.26.2", optional = true }
 
 [features]
-jitdump = ['rsix']
+jitdump = ['rustix']
 vtune = ['ittapi-rs']
 
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