BUILD: jwt: fix declaration of EVP_KEY in jwt-h.h

In file included from include/haproxy/jwt.h:25:
include/haproxy/jwt-t.h:66:2: error: unknown type name 'EVP_PKEY'
        EVP_PKEY *pkey;
        ^
1 error generated.

Fix this compilation issue by inserting openssl-compat.h in jwt-t.h
1 file changed