Upgrade to GitHub-native Dependabot

[dependabot-preview]

Dependabot Preview will be shut down on August 3rd, 2021. In order to keep getting Dependabot updates, please merge this PR and migrate to GitHub-native Dependabot before then.

Dependabot has been fully integrated into GitHub, so you no longer have to install and manage a separate app. This pull request migrates your configuration from Dependabot.com to a config file, using the new syntax. When merged, we'll swap out dependabot-preview (me) for a new dependabot app, and you'll be all set!

With this change, you'll now use the Dependabot page in GitHub, rather than the Dependabot dashboard, to monitor your version updates, and you'll configure Dependabot through the new config file rather than a UI.

If you've got any questions or feedback for us, please let us know by creating an issue in the dependabot/dependabot-core repository.

Learn more about migrating to GitHub-native Dependabot

Please note that regular @dependabot commands do not work on this pull request.

[vercel]

This pull request is being automatically deployed with Vercel (learn more).
To see the status of your deployment, click below or on the icon next to each commit.

🔍 Inspect: https://vercel.com/react-component/slider/HQ5VWZwaF6MGaftA4EZVowWCGEH3
✅ Preview: https://slider-git-dependabot-add-v2-config-file-react-component.vercel.app

[codecov]

Codecov Report

Merging #764 (b16c452) into master (55a662b) will not change coverage.
The diff coverage is 100.00%.

❗ Current head b16c452 differs from pull request most recent head 5c53c7b. Consider uploading reports for the commit 5c53c7b to get more accurate results

@@           Coverage Diff           @@
##           master     #764   +/-   ##
=======================================
  Coverage   88.49%   88.49%           
=======================================
  Files          11       11           
  Lines         756      756           
  Branches      198      199    +1     
=======================================
  Hits          669      669           
  Misses         87       87           

Impacted Files	Coverage Δ
src/Range.tsx	77.32% <100.00%> (ø)

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[dependabot-preview]

As a reminder, Dependabot Preview will be shut down on August 3rd, 2021. You can merge this pull request to migrate to GitHub-native Dependabot. You can read the docs to learn more about what's changing, as well as find out how to get support if you need help migrating.