fix(pack): refresh stale index hash for collapsible-groups metadata

The side change in 0095265 was not followed by packwiz refresh, leaving a
stale hash in index.toml that breaks packwiz-installer with 'Invalid mod
file hash'.

index.toml

@@ -122,7 +122,7 @@ metafile = true
 
 [[files]]
 file = "mods/collapsible-groups.pw.toml"
-hash = "288b5d7f7165b2e3db7826ee723c4cc77be7eb3a642c6490bf1d6ce2876bbf7b"
+hash = "3150778e64e987681e33ee7e7d74b017996e86936ba3ca569737354ebab6715e"
 metafile = true
 
 [[files]]