Set version to 1.3

Author: AlexPetul

pyproject.toml

@@ -7,7 +7,7 @@ name = "django_custom_jsonfield"
 license = {text = "MIT"}
 description = "An extended JSON field for Django and DRF with validation support using jsonschema."
 requires-python = ">=3.8"
-version = "1.2"
+version = "1.3"
 dependencies = [
     "django>=4.0,<5.1",
     "jsonschema>=4.0,<5",