package/nodejs: security bump to 12.18.0

This is a security release.

Vulnerabilities fixed:

CVE-2020-8172: TLS session reuse can lead to host certificate verification bypass (High).
CVE-2020-11080: HTTP/2 Large Settings Frame DoS (Low).
CVE-2020-8174: napi_get_value_string_*() allows various kinds of memory corruption (High).

See https://nodejs.org/en/blog/release/v12.18.0/



Signed-off-by: Martin Bark <martin@barkynet.com>
Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>