fix: add missing environment variables for database secrets in invidious deployment

cluster/apps/invidious/invidious.yml

@@ -23,6 +23,21 @@ spec:
             configMapKeyRef:
               name: invidious-config
               key: config.yaml
+        - name: POSTGRES_PASSWORD
+          valueFrom:
+            secretKeyRef:
+              name: invidious-db-secrets
+              key: postgres-password
+        - name: COMPANION_KEY
+          valueFrom:
+            secretKeyRef:
+              name: invidious-app-secrets
+              key: companion-key
+        - name: HMAC_KEY
+          valueFrom:
+            secretKeyRef:
+              name: invidious-app-secrets
+              key: hmac-key
         envFrom:
         - secretRef:
             name: invidious-db-secrets