chore: Bump Rust dependencies pre-26.3 (#752)

* chore: Bump Rust dependencies

- Bump stackable-operator to 0.106.2
- Bump strum to 0.28
- Bump rand to 0.10

* chore: Add changelog entry

* chore: Remove unused code

---------

Co-authored-by: Nick <10092581+NickLarsenNZ@users.noreply.github.com>

Author: Techassi

CHANGELOG.md

@@ -12,6 +12,7 @@
 
 ### Changed
 
+- Bump stackable-operator to 0.106.2, strum to 0.28, and rand to 0.10 ([#752]).
 - Gracefully shutdown all concurrent tasks by forwarding the SIGTERM signal ([#741]).
 - Bump testing-tools to `0.3.0-stackable0.0.0-dev` ([#733]).
 
@@ -28,6 +29,7 @@
 [#734]: https://github.com/stackabletech/airflow-operator/pull/734
 [#741]: https://github.com/stackabletech/airflow-operator/pull/741
 [#742]: https://github.com/stackabletech/airflow-operator/pull/742
+[#752]: https://github.com/stackabletech/airflow-operator/pull/752
 
 ## [25.11.0] - 2025-11-07