deps: upgrade npm to 7.20.6

[lpinca]

v7.20.6 (2021-08-12)

DEPENDENCIES

• 5bebf280f tar@6.1.8
  • fix: reserve paths case-insensitively
• 5d89de44d tar@6.1.7:
  • fix: normalize paths on Windows systems
• a1bdbea97 #3569
  • remove byte-size (@wraithgar)
• 61782fa85 @npmcli/map-workspaces@1.0.4:
  • fix: better error message for duplicate workspace names
• b88f770fa @npmcli/arborist@2.8.1:
  • #3632 Fix "cannot read property path of null" error in 'npm dedupe'
  • fix(shrinkwrap): always set name on the root node

DOCUMENTATION

• 001f2c1b7 #3621 fix(docs): do not include certain files (@AkiJoey)
• d1812f1a6 #3630 fix(docs): update npm-publish access flag info (@austincho)
• d5a099c7b #3615 fix(readme): add nvm-windows to installers links (@Yash-Singh1)

v7.20.5 (2021-08-05)

DEPENDENCIES

• 44377738e graceful-fs@4.2.8
  • fix: start retrying immediately, stop after 60 seconds

v7.20.4 (2021-08-05)

BUG FIXES

• 6a8086e25 #3463 fix(tests): move more tests to use real npm (@wraithgar)

DEPENDENCIES

• 15fae4941 tar@6.1.6:
  • fix: properly handle top-level files when using strip
  • Avoid an unlikely but theoretically possible redos
  • WriteEntry backpressure
  • fix(unpack): always resume parsing after an entry error
  • fix(unpack): fix hang on large file on open() fail
  • fix: properly prefix hard links
• 745326de0 libnpmexec@2.0.1:
  • Clear progress bar which overlays confirm prompt
• e82bcd4e8 graceful-fs@4.2.7:
  • fix: start retrying immediately, stop after 10 attempts

[github-actions]

Fast-track has been requested by @nodejs-github-bot. Please 👍 to approve.

[lpinca]

Supersedes #39681.

[nodejs-github-bot]

CI: https://ci.nodejs.org/job/node-test-pull-request/39601/

[lpinca]

Closing in favor of #39813.