Fix updating intermediate nullable fields for <= 2.2 Tarantool version (#134)

Updating intermediate nullable fields failed for Tarantool version < 2.3. 
The problem was in error checking. In Tarantool version < 2.3 there are 
`box.error.NO_SUCH_FIELD_NO` and `box.error.NO_SUCH_FIELD_NAME` 
errors for not finding field in the tuple but  in Tarantool version < 2.3 
there is `box.error.NO_SUCH_FIELD` error for this case.

Author: AnaNek

.github/workflows/test_on_push.yaml

@@ -11,7 +11,7 @@ jobs:
       github.event_name == 'pull_request' && github.event.pull_request.head.repo.owner.login != 'tarantool'
     strategy:
       matrix:
-        tarantool-version: ["1.10", "2.3", "2.4", "2.5"]
+        tarantool-version: ["1.10", "2.2", "2.3", "2.4", "2.5"]
       fail-fast: false
     runs-on: [ubuntu-latest]
     steps:

CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ## [Unreleased]
 
+### Fixed
+
+* Fixed not finding field in tuple on `crud.update` if
+  there are `is_nullable` fields in front of it that were added
+  when the schema was changed for Tarantool version <= 2.2.
+  
 ### Added
 
 * `mode`, `prefer_replica` and `balance` options for read operations

crud/common/utils.lua

@@ -212,8 +212,8 @@ local function add_nullable_fields_recursive(operations, operations_map, space_f
     return operations
 end
 
--- Tarantool < 2.3 has no fields `box.error.NO_SUCH_FIELD_NO` and `box.error.NO_SUCH_FIELD_NAME`.
-if _TARANTOOL >= "2.3" then
+-- Tarantool < 2.1 has no fields `box.error.NO_SUCH_FIELD_NO` and `box.error.NO_SUCH_FIELD_NAME`.
+if _TARANTOOL >= "2.1" then
     function utils.is_field_not_found(err_code)
         return err_code == box.error.NO_SUCH_FIELD_NO or err_code == box.error.NO_SUCH_FIELD_NAME
     end