fix(bootloader): use xmodem crc for integrity check

3 jobs for master in 3 seconds (queued for 2 seconds)
Name Stage Failure
build Build
Cloning into '/home/gitlab-runner/builds/f46146f0/0/card10/firmware'...
Checking out ff7fc0d7 as master...
Skipping Git submodules setup
$ # Auto DevOps variables and functions # collapsed multi-line command
$ setup_docker
$ build
Logging to GitLab Container Registry with CI credentials...
bash: line 91: docker: command not found
ERROR: Job failed: exit status 1