npm: upgrade to 1.4.3
debugger: Fix breakpoint not showing after restart

The reason this wasn't working was because after restart, when restoring
breakpoints the scripts wasn't loaded, so the breakpoint.script was
undefined. As a fix I added another check to use breakpoint.scriptReq
instead of breakpoint.script, which is the same except when the
breakpoint is a function.

fixes #7027
Merge remote-tracking branch 'upstream/v0.10' into v0.10