[Snyk] Fix for 1 vulnerabilities

[twilio-product-security]

This PR was automatically created by Snyk using the credentials of a real user.

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:
  • packages/flex-plugin-webpack/package.json
  • packages/flex-plugin-webpack/package-lock.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	551/1000 Why? Recently disclosed, Has a fix available, CVSS 5.3	Improper Input Validation SNYK-JS-POSTCSS-5926692	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

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

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🦉 Improper Input Validation

[codecov[bot]]

Codecov Report

All modified lines are covered by tests :white_check_mark:

Comparison is base (2103f9c) 89.53% compared to head (699a5bf) 89.53%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #840   +/-   ##
=======================================
  Coverage   89.53%   89.53%           
=======================================
  Files         140      140           
  Lines       13455    13455           
  Branches     1014     1014           
=======================================
  Hits        12046    12046           
  Misses       1394     1394           
  Partials       15       15           

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[tmbdrogba]

👍