Update Omnis to 6b4c8ac3340754e7493e485e7eac7db3706bdebf (#1429)

Co-authored-by: Github Actions <[email protected]>

manifests/Omnis.yaml

@@ -2,15 +2,15 @@ name: Omnis
 authors: Darcy Manoel
 homepage: https://github.com/EndlessSkyCommunity/-Omnis
 license: GPL-3.0-or-later
-version: 2d17199d178514e31f7699d761dc497cafab6600
+version: 6b4c8ac3340754e7493e485e7eac7db3706bdebf
 shortDescription: The most extensive all-content plugin to date, for development or
   fun.
 description: 'The most extensive all-content plugin to date. All vanilla content and
   the content of many plugins available to use to put together different ship builds.
   Many more tools are included into Omnis too!
 
   This plugin is part of the Adde Endless Sky collection.'
-url: https://github.com/EndlessSkyCommunity/-Omnis/archive/2d17199d178514e31f7699d761dc497cafab6600.zip
+url: https://github.com/EndlessSkyCommunity/-Omnis/archive/6b4c8ac3340754e7493e485e7eac7db3706bdebf.zip
 autoupdate:
   type: commit
   branch: main