[Snyk] Fix for 1 vulnerabilities

[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	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	551/1000 Why? Recently disclosed, Has a fix available, CVSS 5.3	Regular Expression Denial of Service (ReDoS) SNYK-JS-POSTCSS-1255640	Yes	No Known Exploit

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

Commit messages

Package name: gulp-postcss

The new version differs by 17 commits.

• 94170d6 Release 9.0.0
• f3751c8 Merge pull request #162 from m4thieulavoie/chore/postcss-major-bump
• c0519ac fix: changing node versions
• 0a013d0 fix: added postcss in devDependencies for testing
• 00698a5 Merge pull request #164 from alkorlos/refactor-readme-pcss-extension
• c27fd58 chore: bump postcss-load-config version
• dd4c4e9 (md) update: readmy using with .pcss extension
• 12281d3 docs: pr comments
• 1822c0f docs: updated docs
• 5c04694 fix: moved to peer deps
• 2ab04af chore: bump postcss version to 8
• 5f92ee0 Merge pull request #158 from fredrikpaues/patch-1
• 5edc4aa No `eachDecl` method
• 7e388ec Update README.md: Use SVG badges for readability
• b786700 Update dependencies
• 90a1206 Merge pull request #152 from ZeeCoder/small-updates
• 6adfc53 Fixed deprecations

See the full diff

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