deps: bump Zinnia from 0.20.3 to 0.20.3 (#590)

Bump [zinnia](https://github.com/filecoin-station/zinnia) to 0.20.3.
- [Release notes](https://github.com/filecoin-station/zinnia/releases/v0.20.3)
- [Commits](CheckerNetwork/zinnia@v0.20.2...v0.20.3)

Signed-off-by: Miroslav Bajtoš <oss@bajtos.net>

lib/zinnia.js

@@ -6,7 +6,7 @@ import pRetry from 'p-retry'
 import timers from 'node:timers/promises'
 import { join } from 'node:path'
 
-const ZINNIA_DIST_TAG = 'v0.20.2'
+const ZINNIA_DIST_TAG = 'v0.20.3'
 const ZINNIA_MODULES = [
   {
     module: 'spark',