feat: require Node 10

[malept]

• I have read the contribution documentation for this project.
• I agree to follow the code of conduct that this project follows, as appropriate.
• The changes are appropriately documented (if applicable).
• The changes have sufficient test coverage (if applicable).
• The testsuite passes successfully on my local machine (if applicable).

Summarize your changes:

After #1121 got merged, we need to require Node 10 in the package and make sure that in the future, dependencies which require higher Node versions fail CI.

BREAKING CHANGE: drop support for Node < 10

[codecov-io]

Codecov Report

Merging #1122 into master will increase coverage by 0.42%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##           master   #1122      +/-   ##
=========================================
+ Coverage   99.57%    100%   +0.42%     
=========================================
  Files          14      14              
  Lines         712     712              
=========================================
+ Hits          709     712       +3     
+ Misses          3       0       -3

Impacted Files	Coverage Δ
src/mac.js	100% <ø> (ø)	⬆️
src/ignore.js	100% <0%> (+2%)	⬆️
src/unzip.js	100% <0%> (+16.66%)	⬆️

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