Release 0.21.2

# History

## 0.21.2

Install/update via the bootstrap script:

```shell
wget https://raw.githubusercontent.com/dokku/dokku/v0.21.2/bootstrap.sh
sudo DOKKU_TAG=v0.21.2 bash bootstrap.sh
```

### Bug Fixes

- #4072: @Schlepptop Fix deprecation warning in config_all

### New Features

- #4061: @josegonzalez Drop go sum and mod files from releases

### Refactors

- #4064: @hugopeixoto Use *_PATH consistently

### Documentation

- #4069: @josegonzalez Scheduler plugins are no longer beta
- #4068: @josegonzalez Official plugins are no longer in beta
- #4066: @ltalirz Add ansible as installation route
- #4063: @josegonzalez Clarify why we stop/rebuild apps during upgrade
- #4040: @fonsp Added link to the buildpack plugin docs
- #4062: @hugopeixoto Rewrite upgrade instructions

docs/assets/favicons/browserconfig.xml

@@ -2,10 +2,10 @@
 <browserconfig>
   <msapplication>
     <tile>
-      <square70x70logo src="https://cdn.jsdelivr.net/gh/dokku/dokku@v0.21.1/docs/assets/favicons/mstile-70x70.png"/>
-      <square150x150logo src="https://cdn.jsdelivr.net/gh/dokku/dokku@v0.21.1/docs/assets/favicons/mstile-150x150.png"/>
-      <square310x310logo src="https://cdn.jsdelivr.net/gh/dokku/dokku@v0.21.1/docs/assets/favicons/mstile-310x310.png"/>
-      <wide310x150logo src="https://cdn.jsdelivr.net/gh/dokku/dokku@v0.21.1/docs/assets/favicons/mstile-310x150.png"/>
+      <square70x70logo src="https://cdn.jsdelivr.net/gh/dokku/dokku@v0.21.2/docs/assets/favicons/mstile-70x70.png"/>
+      <square150x150logo src="https://cdn.jsdelivr.net/gh/dokku/dokku@v0.21.2/docs/assets/favicons/mstile-150x150.png"/>
+      <square310x310logo src="https://cdn.jsdelivr.net/gh/dokku/dokku@v0.21.2/docs/assets/favicons/mstile-310x310.png"/>
+      <wide310x150logo src="https://cdn.jsdelivr.net/gh/dokku/dokku@v0.21.2/docs/assets/favicons/mstile-310x150.png"/>
       <TileColor>#da532c</TileColor>
     </tile>
   </msapplication>