Constant rustls::sign::PKCS8_PREFIX_ECDSA_NISTP256

const PKCS8_PREFIX_ECDSA_NISTP256: &[u8] = b"\x02\x01\x00\
      \x30\x13\
      \x06\x07\x2a\x86\x48\xce\x3d\x02\x01\
      \x06\x08\x2a\x86\x48\xce\x3d\x03\x01\x07";