chore: Bump Rust dependencies pre-26.3.0 (#685)

* chore: Bump Rust dependencies

- Bump stackable-operator to 0.106.2
- Bump strum to 0.28
- Bump snafu to 0.9
- Bump ldap3 to 0.12

* chore: Fix clippy lint

* chore: Add changelog entry

Author: Techassi

CHANGELOG.md

@@ -6,6 +6,7 @@ All notable changes to this project will be documented in this file.
 
 ### Changed
 
+- Bump stackable-operator to 0.106.2, strum to 0.28, snafu to 0.9, and ldap3 to 0.12 ([#685]).
 - Gracefully shutdown all concurrent tasks by forwarding the SIGTERM signal ([#674]).
 - OLM deployer doesn't add owner references to cluster scoped objects anymore ([#667]).
   Owner references ensure that objects are garbage collected by OpenShift upon operator removal but they cause problems when the operator is updated.
@@ -38,6 +39,7 @@ All notable changes to this project will be documented in this file.
 [#670]: https://github.com/stackabletech/secret-operator/pull/670
 [#671]: https://github.com/stackabletech/secret-operator/pull/671
 [#674]: https://github.com/stackabletech/secret-operator/pull/674
+[#685]: https://github.com/stackabletech/secret-operator/pull/685
 
 ## [25.11.0] - 2025-11-07