Update rustfix to 0.8.1

Cargo.lock

@@ -766,7 +766,7 @@ dependencies = [
  "miropt-test-tools",
  "once_cell",
  "regex",
- "rustfix",
+ "rustfix 0.8.1",
  "serde",
  "serde_json",
  "tracing",
@@ -4855,6 +4855,18 @@ dependencies = [
  "serde_json",
 ]
 
+[[package]]
+name = "rustfix"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "81864b097046da5df3758fdc6e4822bbb70afa06317e8ca45ea1b51cb8c5e5a4"
+dependencies = [
+ "serde",
+ "serde_json",
+ "thiserror",
+ "tracing",
+]
+
 [[package]]
 name = "rustfmt-config_proc_macro"
 version = "0.3.0"
@@ -5896,7 +5908,7 @@ dependencies = [
  "prettydiff",
  "regex",
  "rustc_version",
- "rustfix",
+ "rustfix 0.6.1",
  "serde",
  "serde_json",
  "tempfile",
@@ -5923,7 +5935,7 @@ dependencies = [
  "prettydiff",
  "regex",
  "rustc_version",
- "rustfix",
+ "rustfix 0.6.1",
  "serde",
  "serde_json",
  "spanned",

src/tools/compiletest/Cargo.toml

@@ -20,7 +20,7 @@ tracing-subscriber = { version = "0.3.3", default-features = false, features = [
 regex = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
-rustfix = "0.6.0"
+rustfix = "0.8.1"
 once_cell = "1.16.0"
 walkdir = "2"
 glob = "0.3.0"