[Deployment] UnknownClient - v0.0.0 - 2026-09-10 #358

Running a single post-deploy release does not work:

python3 deploy.py post-deploy.yaml post-deploy-pipeline

The last argument is only treated as a deployment name when it starts with component- or module-, so post-deploy-pipeline (and vault-backoffice in components.yaml) is mistaken for another config file. The script then tries to load it as YAML, fails, and deploys everything instead of the one release.

Fix: treat a trailing argument that does not end with .yaml/.yml as the deployment-name filter. PR follows from soroush5:fix/deploy-single-postdeploy-filter.