Exclude card keys from encryption certificates for Key Management key

... because for card keys we do not have the secret key available for
import to a card

GnuPG-bug-id: 4794
2 jobs for master in 30 minutes and 53 seconds (queued for 51 seconds)
Status Job ID Name Coverage
  Build
passed #72474
build_clazy_clang_tidy

00:14:34

passed #72473
linux kf5-qt5 qt5.12

00:16:19

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