Refactor json helper and utility (#1682)

* Create 2023-02-15-json

* Update 2023-02-15-json

* Rename 2023-02-15-json to 2023-02-15-json.md

Author: epenet

blog/2023-02-15-json.md

@@ -0,0 +1,14 @@
+---
+author: epenet
+authorURL: https://github.com/epenet
+title: "Refactor json helper and utility"
+---
+
+As of Home Assistant Core 2023.3, some constants and functions have been moved
+between `homeassistant.helpers.json` and `homeassistant.util.json` :
+
+  - `save_json` and `find_paths_unserializable_data` functions should now be
+  imported from `homeassistant.helpers.json`
+  - `json_loads` function should now be imported from `homeassistant.util.json`
+  - `JSON_ENCODE_EXCEPTIONS` and `JSON_DECODE_EXCEPTIONS` constants should now
+  be imported from `homeassistant.util.json`