accounts/keystore: use github.com/google/uuid (#22217)

This replaces the github.com/pborman/uuid dependency with
github.com/google/uuid because the former is only a wrapper for
the latter (since v1.0.0).

Co-authored-by: Felix Lange <fjl@twurst.com>
# Conflicts:
#	accounts/keystore/key.go
#	accounts/keystore/passphrase.go
#	accounts/keystore/presale.go
#	cmd/ethkey/generate.go
#	go.mod
#	go.sum