chore: bump minimum Node version to 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:

Adds a script that bumps Node versions in all packages, and updates several packages that require Node 10.

BREAKING CHANGE: Dropped declared support for Node < 10

[codecov]

Codecov Report

Merging #1405 into master will decrease coverage by 1.75%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1405      +/-   ##
==========================================
- Coverage      72%   70.24%   -1.76%     
==========================================
  Files          73       73              
  Lines        2104     2104              
  Branches      389      389              
==========================================
- Hits         1515     1478      -37     
- Misses        427      478      +51     
+ Partials      162      148      -14

Impacted Files	Coverage Δ
packages/maker/squirrel/src/MakerSquirrel.ts	30% <0%> (-45%)	⬇️
packages/maker/wix/src/MakerWix.ts	40% <0%> (-45%)	⬇️
packages/maker/appx/src/MakerAppX.ts	19.64% <0%> (-35.72%)	⬇️
packages/maker/wix/src/util/author-name.ts	80% <0%> (-10%)	⬇️
packages/maker/appx/src/util/author-name.ts	80% <0%> (-10%)	⬇️
packages/maker/flatpak/src/MakerFlatpak.ts	78.26% <0%> (-8.7%)	⬇️
packages/maker/base/src/Maker.ts	70.27% <0%> (-2.71%)	⬇️
packages/api/core/src/api/import.ts	58.82% <0%> (ø)	⬆️
packages/maker/dmg/src/MakerDMG.ts	100% <0%> (+5.55%)	⬆️
packages/api/core/src/api/make.ts	70.78% <0%> (+5.61%)	⬆️

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