Update "versions.sh" to preserve "null" RCs

Author: tianon

versions.sh

@@ -105,16 +105,22 @@ for version in "${versions[@]}"; do
 
 export fullVersion url ascUrl sha256
 	json="$(
- jq <<<"$json" -c \
- --argjson variants "$variants" \
-'.[env.version] = {
+ jq <<<"$json" -c --argjson variants "$variants"'
+ .[env.version] = {
  version: env.fullVersion,
  url: env.url,
  ascUrl: env.ascUrl,
  sha256: env.sha256,
  variants: $variants,
- }'
+ }
+'
 )"
+
+if [ "$version"="$rcVersion" ];then
+ json="$(jq <<<"$json" -c '
+ .[env.version + "-rc"] //= null
+')"
+fi
 done
 
 jq <<<"$json" -S .> versions.json