Merge branch 'XX-4086/EkvVersionAPI' into 'release'

auth/store/confirmation.go

auth/store/previousNegotiations.go

auth/store/sentRequest.go

auth/store/store.go

backup/jsonStorage.go

backup/keyStorage.go

cmix/cmixMessageBuffer.go

cmix/gateway/storeHostList.go

cmix/identity/receptionID/identity.go

cmix/identity/receptionID/store.go

cmix/identity/receptionID/store/earliestRound.go

cmix/identity/receptionID/store/unknownRounds.go

cmix/identity/tracker.go

cmix/message/meteredCmixMessageBuffer.go

cmix/nodes/store.go

cmix/nodes/storeKey.go

cmix/pickup/store/store.go

cmix/pickup/store/uncheckedRounds.go

cmix/rounds/roundStorage.go

e2e/e2eMessageBuffer.go