Update mill-main to 0.11.6-70-8d315d#103

scala-steward wants to merge 1 commit intolefou:mainlefou/mill-vaadin:mainfrom

scala-steward:update/mill-main-0.11.6-70-8d315dscala-steward/mill-vaadin:update/mill-main-0.11.6-70-8d315dCopy head branch name to clipboard