fix(deps): update rust crate sha2 to 0.11.0

crates/plotnik-lib/Cargo.toml

@@ -28,7 +28,7 @@ rowan = "0.16.1"
 rustc-hash = "2"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1"
-sha2 = "0.10.9"
+sha2 = "0.11.0"
 thiserror = "2.0.17"
 topological-sort = "0.2"
 tree-sitter = { version = "0.26.10", optional = true }

crates/plotnik-lib/src/core/grammar/identity.rs

@@ -1,5 +1,7 @@
 //! Provenance for one exact `grammar.json` artifact.
 
+use std::fmt::Write as _;
+
 use sha2::{Digest, Sha256};
 
 /// Exact grammar artifact used to bind a query.
@@ -19,9 +21,15 @@ impl GrammarIdentity {
         grammar_json: &[u8],
         source: impl Into<String>,
     ) -> Self {
+        let digest = Sha256::digest(grammar_json);
+        let mut sha256 = String::with_capacity(digest.len() * 2);
+        for byte in digest {
+            write!(&mut sha256, "{byte:02x}").expect("writing to a String cannot fail");
+        }
+
         Self {
             name: name.into(),
-            sha256: format!("{:x}", Sha256::digest(grammar_json)),
+            sha256,
             source: source.into(),
         }
     }