chore: Use hex encoding for Sha256Hash debug impl

This makes debug output easier to work with.

lib/config/src/hash.rs

@@ -1,5 +1,5 @@
 /// Sha256 hash, represented as bytes.
-#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
+#[derive(Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct Sha256Hash(pub [u8; 32]);
 
 impl Sha256Hash {
@@ -33,6 +33,12 @@ impl std::str::FromStr for Sha256Hash {
     }
 }
 
+impl std::fmt::Debug for Sha256Hash {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "Sha256({})", hex::encode(self.0))
+    }
+}
+
 impl std::fmt::Display for Sha256Hash {
     fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
         write!(f, "{}", hex::encode(self.0))