Resolve "Run login app with Gunicorn"

Closes #107 (closed)

helmchart/single-sign-on/Chart.yaml

 apiVersion: v2
 description: A Helm chart for Stackspin's Single sign-on components
 name: single-sign-on
-version: 0.7.2
+version: 0.7.3
 icon: https://stackspin.net/assets/images/logo.svg
 dependencies:
   # https://k8s.ory.sh/helm/hydra.html
   - name: hydra
-    version: 0.21.0
+    version: 0.21.5
     repository: "https://k8s.ory.sh/helm/charts"
     tags:
       - single-sign-on