chore: derive strum::Display for LogLevel (#805)

* derive display for loglevel

* Update Changelog

* Update crates/stackable-operator/CHANGELOG.md

Co-authored-by: Techassi <[email protected]>

---------

Co-authored-by: Techassi <[email protected]>

Author: xeniape

crates/stackable-operator/CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+### Added
+
+- Derive `strum::Display` for `LogLevel`([#805]).
+
+[#805]: https://github.com/stackabletech/operator-rs/pull/805
+
 ## [0.69.0] - 2024-06-03
 
 ### Added

crates/stackable-operator/src/product_logging/spec.rs

@@ -313,8 +313,10 @@ pub struct AppenderConfig {
     PartialEq,
     PartialOrd,
     Serialize,
+    strum::Display,
 )]
 #[derivative(Default)]
+#[strum(serialize_all = "lowercase")]
 pub enum LogLevel {
     TRACE,
     DEBUG,