Bump node-gyp from 5.0.3 to 5.0.4

[dependabot-preview]

Bumps node-gyp from 5.0.3 to 5.0.4.

Changelog

Sourced from node-gyp's changelog.

v5.0.4 2019-09-27

• [1236869ffc] - gyp: modify XcodeVersion() to convert "4.2" to "0420" and "10.0" to "1000" (Christian Clauss) #1895
• [36638afe48] - gyp: more decode stdout on Python 3 (cclauss) #1894
• [f753c167c5] - gyp: decode stdout on Python 3 (cclauss) #1890
• [60a4083523] - doc: update xcode install instructions to match Node's BUILDING (Nhan Khong) #1884
• [19dbc9ac32] - deps: update tar to 4.4.12 (Matheus Marchini) #1889
• [5f3ed92181] - bin: fix the usage instructions (Halit Ogunc) #1888
• [aab118edf1] - lib: adding keep-alive header to download requests (Milad Farazmand) #1863
• [1186e89326] - lib: ignore non-critical os.userInfo() failures (Rod Vagg) #1835
• [785e527c3d] - doc: fix missing argument for setting python path (lagorsse) #1802
• [a97615196c] - gyp: rm semicolons (Python != JavaScript) (MattIPv4) #1858
• [06019bac24] - gyp: assorted typo fixes (XhmikosR) #1853
• [3f4972c1ca] - gyp: use "is" when comparing to None (Vladyslav Burzakovskyy) #1860
• [1cb4708073] - src,win: improve unmanaged handling (Peter Sabath) #1852
• [5553cd910e] - gyp: improve Windows+Cygwin compatibility (Jose Quijada) #1817
• [8bcb1fbb43] - gyp: Python 3 Windows fixes (João Reis) #1843
• [2e24d0a326] - test: accept Python 3 in test-find-python.js (João Reis) #1843
• [1267b4dc1c] - build: add test run Python 3.7 on macOS (Christian Clauss) #1843
• [da1b031aa3] - build: import StringIO on Python 2 and Python 3 (Christian Clauss) #1836
• [fa0ed4aa42] - build: more Python 3 compat, replace compile with ast (cclauss) #1820
• [18d5c7c9d0] - win,src: update win_delay_load_hook.cc to work with /clr (Ivan Petrovic) #1819

Commits

• b887c40 v5.0.4: bump version and update changelog
• 1236869 gyp: modify XcodeVersion() to convert "4.2" to "0420" and "10.0" to "1000"
• 36638af gyp: more decode stdout on Python 3
• f753c16 gyp: decode stdout on Python 3
• 60a4083 doc: update xcode install instructions to match Node's BUILDING
• 19dbc9a deps: update tar to 4.4.12
• 5f3ed92 bin: fix the usage instructions
• aab118e lib: adding keep-alive header to download requests
• 1186e89 lib: ignore non-critical os.userInfo() failures
• 785e527 doc: fix missing argument for setting python path
• Additional commits viewable in compare view

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