Release 0.17.9

# History

## 0.17.9

Install/update via the bootstrap script:

```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.17.9/bootstrap.sh
sudo DOKKU_TAG=v0.17.9 bash bootstrap.sh
```

### Bug Fixes

- #3593: @JakeAngell Fix nginx template for https in "Connection" header

### Documentation

- #3595: @josegonzalez Drop extra help output for trace

docs/assets/versions.json

@@ -14,6 +14,6 @@
     "0.14.6",
     "0.15.5",
     "0.16.4",
-    "0.17.8"
+    "0.17.9"
   ]
 }