Enable salsa feature for syntax-bridge

Author: Veykril

crates/syntax-bridge/Cargo.toml

@@ -20,8 +20,7 @@ syntax.workspace = true
 parser.workspace = true
 tt.workspace = true
 stdx.workspace = true
-# span = {workspace = true, default-features = false} does not work
-span = { path = "../span", version = "0.0.0", default-features = false}
+span.workspace = true
 intern.workspace = true
 
 [dev-dependencies]