[Buildroot] [PATCH-2019.02] package/nodejs: security bump to version 8.15.1

[Peter Korsgaard]

>>>>> "Peter" == Peter Korsgaard <peter at korsgaard.com> writes:

 > Fixes the following security issues:
 > Node.js: Slowloris HTTP Denial of Service with keep-alive (CVE-2019-5737)
 > OpenSSL: 0-byte record padding oracle (CVE-2019-1559)

 > For more details, see the CHANGELOG:
 > https://github.com/nodejs/node/blob/master/doc/changelogs/CHANGELOG_V8.md#8.15.1

 > Signed-off-by: Peter Korsgaard <peter at korsgaard.com>

Committed to 2018.02.x, 2018.11.x and 2019.02.x, thanks.

-- 
Bye, Peter Korsgaard