Change adu file size to be int64_t in case of larger updates (#2393)

* change adu file size to be uint64_t in case of larger updates

* change to int64_t to increase ease of detection of overflow

sdk/inc/azure/iot/az_iot_adu_client.h

@@ -383,7 +383,7 @@ typedef struct
   /**
    * Size of a file, in bytes.
    */
-  uint32_t size_in_bytes;
+  int64_t size_in_bytes;
   /**
    * Hashes provided for a given file in the update request.
    */

sdk/src/azure/iot/az_iot_adu_client.c

@@ -780,7 +780,7 @@ AZ_NODISCARD az_result az_iot_adu_client_parse_update_manifest(
             _az_RETURN_IF_FAILED(az_json_reader_next_token(ref_json_reader));
             RETURN_IF_JSON_TOKEN_NOT_TYPE((ref_json_reader), AZ_JSON_TOKEN_NUMBER);
 
-            _az_RETURN_IF_FAILED(az_json_token_get_uint32(
+            _az_RETURN_IF_FAILED(az_json_token_get_int64(
                 &ref_json_reader->token, &update_manifest->files[files_index].size_in_bytes));
           }
           else if (az_json_token_is_text_equal(

sdk/tests/iot/adu/test_az_iot_adu.c

@@ -412,7 +412,7 @@ static uint8_t instructions_steps_handler_properties_install_criteria[] = "1.0";
 static uint8_t files_id[] = "f2f4a804ca17afbae";
 static uint8_t files_filename[] = "iot-middleware-sample-adu-v1.1";
 static uint8_t files_id_contoso[] = "f9fec76f10aede60e";
-static uint32_t files_size_in_bytes = 844976;
+static int64_t files_size_in_bytes = 844976;
 static uint8_t files_hash_id[] = "sha256";
 static uint8_t files_hashes_sha[] = "xsoCnYAMkZZ7m9RL9Vyg9jKfFehCNxyuPFaJVM/WBi0=";
 static uint8_t created_date_time[] = "2022-07-07T03:02:48.8449038Z";