* for LibreTransmitter, allow 1-min update disabled by default

* remove duplicate code from Fastfile,
* consolidate 2 macos to 1 ubuntu runner,
* build yml: remove alive branches,
* update directly to target branch,
* remove code no longer needed

* allow any target branch to sync with upstream branch of the same name
* minimize the number of runners
* only run create certs if a build is planned
* add nice error message if GH_PAT is invalid

* before Protect against invalid immutable boluses with future end date;
* before Unable to Save Carb error