Fix cargo clippy issues

geneit_backend/src/utils/crypt_utils.rs

@@ -5,7 +5,7 @@ pub fn sha256(bytes: &[u8]) -> String {
     let mut hasher = Sha256::new();
     hasher.update(bytes);
     let h = hasher.finalize();
-    format!("{:x}", h)
+    format!("{h:x}")
 }
 
 /// Compute hash of a slice of bytes (sha512)
@@ -13,5 +13,5 @@ pub fn sha512(bytes: &[u8]) -> String {
     let mut hasher = Sha512::new();
     hasher.update(bytes);
     let h = hasher.finalize();
-    format!("{:x}", h)
+    format!("{h:x}")
 }