NEWS: prepare for 2.8.1

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
12 jobs for release-2.8.1 in 4 minutes and 47 seconds (queued for 18 seconds)
Name Stage Failure
failed
Ubuntu 16.04 build (oss-fuzz) Build
Makefile:1282: recipe for target 'src/common.lo' failed
make[2]: Leaving directory '/builds/jjelen/libcacard'
make[1]: *** [all-recursive] Error 1
Makefile:1408: recipe for target 'all-recursive' failed
make[1]: Leaving directory '/builds/jjelen/libcacard'
Makefile:922: recipe for target 'all' failed
make: *** [all] Error 2
Cleaning up file based variables
ERROR: Job failed: exit code 1