Update aaa_base to version 84.87+git20210601.8cb043f / rev 479 via SR 896866
https://build.opensuse.org/request/show/896866
by user WernerFink + dimstar_suse
- Update to version 84.87+git20210601.8cb043f:
* Use shell builtins for $HOSTTYPE and others (boo#1186296)