Bump lodash from 4.17.15 to 4.17.21

[dependabot]

Bumps lodash from 4.17.15 to 4.17.21.

Commits

• f299b52 Bump to v4.17.21
• c4847eb Improve performance of toNumber, trim and trimEnd on large input strings
• 3469357 Prevent command injection through _.template's variable option
• ded9bc6 Bump to v4.17.20.
• 63150ef Documentation fixes.
• 00f0f62 test.js: Remove trailing comma.
• 846e434 Temporarily use a custom fork of lodash-cli.
• 5d046f3 Re-enable Travis tests on 4.17 branch.
• aa816b3 Remove /npm-package.
• d7fbc52 Bump to v4.17.19
• Additional commits viewable in compare view

Maintainer changes

This version was pushed to npm by bnjmnt4n, a new releaser for lodash since your current version.

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