[EC] Use s2n-bignum point doubling for P-384 and P-521 (#2011) #1317

Job	Run time
amazon-corretto-crypto-provider	0s
bind9	0s
Cyrus-SASL	0s
grpc	0s
haproxy	0s
libevent	0s
nmap	0s
ntp	0s
OpenLDAP	0s
openvpnMaster	0s
openvpn2-6	0s
Python main	0s
Python releases (FIPS=${{ matrix.fips }} OPENSSL_IN_CRT=${{ matrix.openssl_in_crt }})	0s
socat	0s
strongswan	0s
tcpdump	0s
tpm2-tss	0s
trousers	0s
	0s

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