[Snyk] Security upgrade flat from 1.6.1 to 5.0.2

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `npm` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • package.json
  • package-lock.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Issue	Breaking Change	Exploit Maturity
	Prototype Pollution SNYK-JS-FLAT-596927	Yes	No Known Exploit

Commit messages

Package name: flat

The new version differs by 41 commits.

• e5ffd66 Release 5.0.2
• fdb79d5 Update dependencies, refresh lockfile, format with standard.
• e52185d Test against node 14 in CI.
• 0189cb1 Avoid arrow function syntax.
• f25d3a1 Release 5.0.1
• 54cc7ad use standard formatting
• 779816e drop dependencies
• 2eea6d3 Bump lodash from 4.17.15 to 4.17.19
• a61a554 Bump acorn from 7.1.0 to 7.4.0
• 20ef0ef Fix prototype pollution on unflatten
• e8fb281 Test prototype pollution on unflatten
• 6e95c43 Add node 10 & 12 to travis config.
• 38239cc Release 5.0.0
• beaea9d Add tests around cli. Only show usage if on TTY & no argument, allow eaccess error if file not readable.
• 533ac93 Convert var to const across source.
• fdfd095 Exit 1 on usage if specified a file.
• 369b206 Exit 1 on usage.
• f9f0788 Stop cli processing on error.
• a3909c5 Fix lint issues, use non-deprecated strictEqual/deepStrictEqual in tests.
• 74f83ab Update dependencies.
• 2ac1b4d Fix losing order of keys after unflatten an object
• 3b3cd0a Fix issue in `overwrite` example code
• 2b99901 feat: (flatten, unflatten) Add the transformKey opt.
• 32432dd Release 4.1.0

See the full diff

Check the changes in this PR to ensure they won't cause issues with your project.

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[codecov[bot]]

Codecov Report

Merging #209 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #209   +/-   ##
=======================================
  Coverage   91.11%   91.11%           
=======================================
  Files          58       58           
  Lines        2250     2250           
  Branches      500      500           
=======================================
  Hits         2050     2050           
  Misses        200      200           

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