dnssec: enable speedup of rrsig validation by deterministic ECDSA

src/knot/dnssec/rrset-sign.c

src/knot/zone/semantic-check.c

src/libdnssec/key.h

src/libdnssec/key/algorithm.c

src/libdnssec/sign.h

src/libdnssec/sign/sign.c

tests-extra/tests/dnssec/no_resign2/test.py

tests/libdnssec/test_keystore_pkcs11.c

tests/libdnssec/test_sign.c