Release 0.19.9

# History

## 0.19.9

Install/update via the bootstrap script:

```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.19.9/bootstrap.sh
sudo DOKKU_TAG=v0.19.9 bash bootstrap.sh
```

### Bug Fixes

- #3781: @michaelshobbs Respect DOKKU_APP_USER in is_image_herokuish_based

### Other

- #3773: @dependabot-preview[bot] chore(deps): bump google.golang.org/grpc from 1.25.0 to 1.25.1 in /tests/apps/gogrpc
- #3772: @dependabot-preview[bot] chore(deps): bump gunicorn from 19.9.0 to 20.0.0 in /tests/apps/multi
- #3778: @dependabot-preview[bot] chore(deps): [security] bump symfony/http-foundation from 3.4.32 to 3.4.35 in /tests/apps/php
- #3768: @dependabot-preview[bot] chore(deps): bump google.golang.org/grpc from 1.24.0 to 1.25.0 in /tests/apps/gogrpc

docs/assets/style.css

@@ -39,13 +39,13 @@ h1 {
   font-size: 1.6em;
 }
 .header .navbar-brand a {
-  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.19.8/docs/assets/dokku.png);
+  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.19.9/docs/assets/dokku.png);
   text-indent: 40px;
 }
 .blurb {
   color: #424242;
   background-color: #ededed;
-  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.19.8/docs/assets/gplaypattern.png);
+  background-image: url(https://cdn.jsdelivr.net/gh/dokku/dokku@v0.19.9/docs/assets/gplaypattern.png);
   padding: 45px 0;
   text-align: center;
 }