Add memchr to [workspace.dependencies].

Cargo.toml

@@ -62,6 +62,7 @@ exclude = [
 [workspace.dependencies]
 # tidy-alphabetical-start
 bitflags = "2.9.3"
+memchr = "2.7.5"
 thin-vec = "0.2.14"
 # tidy-alphabetical-end
 

compiler/rustc_ast/Cargo.toml

@@ -6,7 +6,7 @@ edition = "2024"
 [dependencies]
 # tidy-alphabetical-start
 bitflags.workspace = true
-memchr = "2.7.4"
+memchr.workspace = true
 rustc-literal-escaper = "0.0.5"
 rustc_ast_ir = { path = "../rustc_ast_ir" }
 rustc_data_structures = { path = "../rustc_data_structures" }

compiler/rustc_lexer/Cargo.toml

@@ -14,7 +14,7 @@ Rust lexer used by rustc. No stability guarantees are provided.
 
 # Note that this crate purposefully does not depend on other rustc crates
 [dependencies]
-memchr = "2.7.4"
+memchr.workspace = true
 unicode-xid = "0.2.0"
 
 [dependencies.unicode-properties]