Upgrade sha2 to 0.9.3 (#14746)

frozen-abi/src/hash.rs

@@ -12,12 +12,12 @@ pub struct Hasher {
 
 impl Hasher {
     pub fn hash(&mut self, val: &[u8]) {
-        self.hasher.input(val);
+        self.hasher.update(val);
     }
     pub fn result(self) -> Hash {
         // At the time of this writing, the sha2 library is stuck on an old version
         // of generic_array (0.9.0). Decouple ourselves with a clone to our version.
-        Hash(<[u8; HASH_BYTES]>::try_from(self.hasher.result().as_slice()).unwrap())
+        Hash(<[u8; HASH_BYTES]>::try_from(self.hasher.finalize().as_slice()).unwrap())
     }
 }