Security update for nodejs8 (moderate)

This update for nodejs8 to version 8.11.4 fixes the following issues:

Security issues fixed:

• CVE-2018-12115: Fixed an out-of-bounds memory write in Buffer that could
  be used to write to memory outside of a Buffer’s memory space buffer
  (bsc#1105019)
• Upgrade to OpenSSL 1.0.2p, which fixed:
  • CVE-2018-0732: Client denial-of-service due to large DH parameter
    (bsc#1097158)
  • ECDSA key extraction via local side-channel

Other changes made:

• Recommend same major version npm package (bsc#1097748)
• Fix parallel/test-tls-passphrase.js test to continue to function with
  older versions of OpenSSL library.

This update was imported from the SUSE:SLE-15:Update update project.