Update release signing keys.

These are now

------------------------ >8 ------------------------

pub rsa3072 2017-03-17 [SC] [expires: 2027-03-15]

5B80C5754298F0CB55D8ED6ABCEF7E294B092E28

sig R BCEF7E294B092E28 2017-03-17 Andre Heinecke (Release Signing Key)
uid Andre Heinecke (Release Signing Key)
sig 3 BCEF7E294B092E28 2017-03-17 Andre Heinecke (Release Signing Key)
sig 1FDF723CF462B6B1 2017-03-17 Andre Heinecke <aheinecke@intevation.de>

pub ed25519 2020-08-24 [SC] [expires: 2030-06-30]

6DAA6E64A76D2840571B4902528897B826403ADA

uid Werner Koch (dist signing 2020)
sig 3 528897B826403ADA 2020-08-24 Werner Koch (dist signing 2020)
sig 249B39D24F25E3B6 2020-08-24 Werner Koch (dist sig)
sig 63113AE866587D0A 2020-08-24 wk@gnupg.org
sig E3FDFF218E45B72B 2020-08-24 Werner Koch (wheatstone commit signing)
sig F2AD85AC1E42B367 2020-08-24 Werner Koch <wk@gnupg.org>

pub ed25519 2021-05-19 [SC] [expires: 2027-04-04]

AC8E115BF73E2D8D47FA9908E98E9B2D19C6C8BD

uid Niibe Yutaka (GnuPG Release Key)
sig 3 E98E9B2D19C6C8BD 2021-05-19 Niibe Yutaka (GnuPG Release Key)
sig 00B45EBD4CA7BABE 2021-09-14 NIIBE Yutaka <gniibe@fsij.org>
sig E267B052364F028D 2021-09-14 NIIBE Yutaka <gniibe@fsij.org>