chore: add changelog

Signed-off-by: Bart Jaskulski <bjaskulski@protonmail.com>

CHANGELOG.md

+## [1.13.0] - 2024-08-09
+### Changed
+- Deprecated `WPDeskLoggerFactory`.
+- Deprecated `Settings` class in `SimpleLoggerFactory`. Prefer using options array.
+- Always use WooCommerce logger handler by default, and fallback to WordPress debug.log only, when previous is unavailable.
+### Added
+- `SimpleLoggerFactory` is now processing messages according to PSR-3 templates.
+- From now on `SimpleLoggerFactory` adds unique ID for each session in context to ease identify messages in high-concurrency environments.
+- Added `action_level` option to `SimpleLoggerFactory`, which uses `FingersCrossedHandler` underneath. You can use this option, to ensure, that messages after particular level are always logged (e.g. critical).
+
 ## [1.12.1] - 2024-03-26
 ### Fixed
 - WC logger initialisation