Update python-rpm-macros to version 20211209.3834c04 / rev 38 via SR 937339
https://build.opensuse.org/request/show/937339
by user mcepl + dimstar_suse
- Update to version 20211209.3834c04:
* fix flavor executable substitution
- Update to version 20211208.d090fb9:
* Add python310 flavor macros to compile set