nix upgrade to 0.26.1 (#2135)

cumulus/Cargo.lock

@@ -1593,7 +1593,7 @@ dependencies = [
  "cfg-if",
  "crossbeam-utils",
  "lazy_static",
- "memoffset",
+ "memoffset 0.6.5",
  "scopeguard",
 ]
 
@@ -5201,6 +5201,15 @@ dependencies = [
  "autocfg",
 ]
 
+[[package]]
+name = "memoffset"
+version = "0.7.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5de893c32cde5f383baa4c04c5d6dbdd735cfd4a794b0debdb2bb1b421da5ff4"
+dependencies = [
+ "autocfg",
+]
+
 [[package]]
 name = "memory-db"
 version = "0.31.0"
@@ -5538,21 +5547,21 @@ dependencies = [
  "bitflags",
  "cfg-if",
  "libc",
- "memoffset",
+ "memoffset 0.6.5",
 ]
 
 [[package]]
 name = "nix"
-version = "0.25.0"
+version = "0.26.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e322c04a9e3440c327fca7b6c8a63e6890a32fa2ad689db972425f07e0d22abb"
+checksum = "bfdda3d196821d6af13126e40375cdf7da646a96114af134d5f417a9a1dc8e1a"
 dependencies = [
- "autocfg",
  "bitflags",
  "cfg-if",
  "libc",
- "memoffset",
+ "memoffset 0.7.1",
  "pin-utils",
+ "static_assertions",
 ]
 
 [[package]]
@@ -8210,7 +8219,7 @@ dependencies = [
  "hex-literal",
  "jsonrpsee",
  "log",
- "nix 0.25.0",
+ "nix 0.26.2",
  "pallet-transaction-payment-rpc",
  "parachains-common",
  "parity-scale-codec",
@@ -13764,7 +13773,7 @@ dependencies = [
  "log",
  "mach",
  "memfd",
- "memoffset",
+ "memoffset 0.6.5",
  "paste",
  "rand 0.8.5",
  "rustix 0.35.9",

cumulus/polkadot-parachain/Cargo.toml

@@ -94,7 +94,7 @@ substrate-build-script-utils = { git = "https://github.com/paritytech/substrate"
 
 [dev-dependencies]
 assert_cmd = "2.0"
-nix = "0.25"
+nix = { version = "0.26.1", features = ["signal"] }
 tempfile = "3.3.0"
 tokio = { version = "1.24.2", features = ["macros", "time", "parking_lot"] }
 wait-timeout = "0.2"