Allow TAB to go to a key in EPA key buffers

* lisp/epa.el (epa--insert-keys): Allow TAB to go to the keys
(bug#47876).
6 jobs for master in 17 minutes and 32 seconds (queued for 9 seconds)
Status Job ID Name Coverage
  Fast
failed #18836
test-fast-inotify

00:12:38

 
  Normal
failed #18837
test-lisp-inotify

00:04:54

passed #18838
test-lisp-net-inotify

00:04:06

 
  Slow
skipped #18839
build-native-bootstrap-speed0
skipped #18840
build-native-bootstrap-speed1
skipped #18841
build-native-bootstrap-speed2
 
Name Stage Failure
failed
test-lisp-inotify Normal
make: *** [check-lisp] Error 2
make: Leaving directory '/checkout/test'
Running after_script
Running after script...
$ test -n "$(docker ps -aq -f name=${test_name})" && docker cp ${test_name}:checkout/test ${test_name}
$ test -n "$(docker ps -aq -f name=${test_name})" && docker rm ${test_name}
test-lisp-inotify-ed42afd4
Cleaning up file based variables
ERROR: Job failed: exit code 2
failed
test-fast-inotify Fast
make: *** [check] Error 2
make: Leaving directory '/checkout/test'
Running after_script
Running after script...
$ test -n "$(docker ps -aq -f name=${test_name})" && docker cp ${test_name}:checkout/test ${test_name}
$ test -n "$(docker ps -aq -f name=${test_name})" && docker rm ${test_name}
test-fast-inotify-ed42afd4
Cleaning up file based variables
ERROR: Job failed: exit code 2