chore: fix ?

Author: reggi

cli/lib/build.js

@@ -117,7 +117,7 @@ const main = async ({loglevel, releases: rawReleases, useCurrent, navPath, conte
    * this voids the cache when a new version is added to release.json / not in the cli-cache.json
    * this is done so that the previous major versions nav can be reset to legacy and pages can be droped from its variant
    */
-  cache.voidOnNewKey(releases.map(v => v.id))
+  cache?.voidOnNewKey(releases.map(v => v.id))
 
   const updates = await Promise.all(
     releases.map(r => extractRelease(r, {cache, contentPath, baseNav: navData, prerelease})),