Update nix dependency to 0.25

cargo-deny made it clear that we were pulling in two version of the nix
dependency. That's entirely unnecessary. Use 0.25 everywhere, which will
end up reducing the total amount of code compiled and shipped.

Signed-off-by: Daniel Müller <[email protected]>

Author: d-e-s-o

Cargo.lock

@@ -7,5 +7,5 @@ edition = "2021"
 
 [dependencies]
 libbpf-rs = { path = "../../libbpf-rs" }
-nix = { version = "0.24", default-features = false, features = ["net", "user"] }
+nix = { version = "0.25", default-features = false, features = ["net", "user"] }
 clap = { version = "3.1", default-features = false, features = ["std", "derive"] }

examples/bpf_query/Cargo.toml

@@ -10,7 +10,7 @@ anyhow = "1.0"
 libbpf-rs = { path = "../../libbpf-rs" }
 libc = "0.2"
 plain = "0.2"
-nix = { version = "0.24", default-features = false, features = ["net", "user"] }
+nix = { version = "0.25", default-features = false, features = ["net", "user"] }
 clap = { version = "3.1", default-features = false, features = ["std", "derive"] }
 
 [build-dependencies]

examples/tc_port_whitelist/Cargo.toml

@@ -13,7 +13,7 @@ anyhow = "1.0"
 clap = { version = "3.2.1", default-features = false, features = ["std", "derive"] }
 ctrlc = "3.2"
 libbpf-rs = { path = "../../libbpf-rs" }
-nix = { version = "0.24", default-features = false, features = ["net", "user"] }
+nix = { version = "0.25", default-features = false, features = ["net", "user"] }
 
 [build-dependencies]
 libbpf-cargo = { path = "../../libbpf-cargo" }

examples/tproxy/Cargo.toml

@@ -24,7 +24,7 @@ static = ["libbpf-sys/static"]
 bitflags = "1.3"
 lazy_static = "1.4"
 libbpf-sys = { version = "1.0.3" }
-nix = { version = "0.24", default-features = false, features = ["net", "user"] }
+nix = { version = "0.25", default-features = false, features = ["net", "user"] }
 num_enum = "0.5"
 strum_macros = "0.23"
 thiserror = "1.0"