Due to a deficiency of cozypkg (--with-source reconciles the HelmChart,
but not the HelmRepository), we have to use workarounds to bulletproof
the latest migration, by applying directly from the assets server.
```release-note
[installer] Run 20th migration using helm charts directly from the
assets server instead of relying on cozypkg to reconcile its resources
properly.
```
Signed-off-by: Timofei Larkin <lllamnyp@gmail.com>
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