Security update for nodejs6 (moderate)

This update for nodejs6 to version 6.14.3 fixes the following issues:

The following security vulnerability was addressed:

• Fixed a denial of service (DoS) vulnerability in Buffer.fill(), which
  could hang when being called (CVE-2018-7167, bsc#1097375).

The following other changes were made:

• Use absolute paths in executable shebang lines
• Fixed building with ICU61.1 (bsc#1091764)

This update was imported from the SUSE:SLE-12:Update update project.