Update vikunja/vikunja Docker tag to v0.24.6

Author: renovate-bot

apps/vikunja/deployment.yaml

@@ -26,7 +26,7 @@ spec:
         seccompProfile:
           type: "RuntimeDefault"
       containers:
-        - image: "vikunja/vikunja:0.24.5"
+        - image: "vikunja/vikunja:0.24.6"
           name: "vikunja"
           securityContext:
             allowPrivilegeEscalation: false