Add RSS update script execution to build process

Co-authored-by: Copilot <copilot@github.com>

Author: martrapp

bin/build

@@ -16,3 +16,5 @@ find dist -type f -exec grep -l 'source src="/video.mp4"' {} \; | xargs sed -i '
 echo "/*\n  cache-control: max-age=60\n  last-modified: `date -u +'%a, %d %b %Y %H:%M:%S GMT'`" > dist/_headers
 
 cat dist/_headers
+
+node ./bin/rss-update.ts