Add changelog for version 0.6.9

CHANGELOG.md

+## 0.6.9 (2024-12-17)
+
+### Fixed (1 change)
+
+- [Fix missing Python import for List](https://codebase.helmholtz.cloud/hifis-software-deployment/hca-plugin/-/commit/23e9fea49ea04ed94a3f7da820203a4c9d3f4dd2) ([merge request](https://codebase.helmholtz.cloud/hifis-software-deployment/hca-plugin/-/merge_requests/151))
+
+### Maintenance (3 changes)
+
+- [Bump helmholtz-cloud-agent from 0.7.2 to 0.7.4](https://codebase.helmholtz.cloud/hifis-software-deployment/hca-plugin/-/commit/6eda2ce573970fb4cb38c9b5d08146061da1b147) ([merge request](https://codebase.helmholtz.cloud/hifis-software-deployment/hca-plugin/-/merge_requests/152))
+- [Bump attrs from 24.2.0 to 24.3.0](https://codebase.helmholtz.cloud/hifis-software-deployment/hca-plugin/-/commit/5be2466cfa9b228d0d9d2665b595774119178b38) ([merge request](https://codebase.helmholtz.cloud/hifis-software-deployment/hca-plugin/-/merge_requests/150))
+- [Bump helmholtz-cloud-agent from 0.7.1 to 0.7.2](https://codebase.helmholtz.cloud/hifis-software-deployment/hca-plugin/-/commit/be0d0576df0e7ed951ba87505256f977b64e0ed9) ([merge request](https://codebase.helmholtz.cloud/hifis-software-deployment/hca-plugin/-/merge_requests/149))
+
 ## 0.6.8 (2024-12-16)
 
 ### Added (1 change)