[Snyk] Fix for 3 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:
  • webui/package.json

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Breaking Change	Exploit Maturity
	711/1000 Why? Recently disclosed, Has a fix available, CVSS 8.5	Arbitrary File Write SNYK-JS-TAR-1579147	Yes	No Known Exploit
	711/1000 Why? Recently disclosed, Has a fix available, CVSS 8.5	Arbitrary File Write SNYK-JS-TAR-1579152	Yes	No Known Exploit
	711/1000 Why? Recently disclosed, Has a fix available, CVSS 8.5	Arbitrary File Write SNYK-JS-TAR-1579155	Yes	No Known Exploit

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

Commit messages

Package name: node-sass

The new version differs by 74 commits.

• 7105b0a 5.0.0 (Add lower-case passHostHeader key support. traefik/traefik#3015)
• 0648b5a chore: Add Node 15 support (Safe access to ECS API pointer values. traefik/traefik#2983)
• e2391c2 Add a deprecation message to the readme (websockets sticky works stickyness does not traefik/traefik#3011)
• 6a33e53 chore: Don't upload artifacts on PRs
• d763506 chore: Only run coverage on main repo
• d4ebe72 build(deps): update actions/setup-node requirement to v2.1.2
• 2bebe05 build(deps-dev): bump rimraf from 2.7.1 to 3.0.2
• f877689 chore: Don't double build DependaBot PRs
• b48fac4 chore: Add weekly DependaBot updates
• 91c40a0 Remove deprecated process.sass API
• 1f6df86 Replace lodash/assign in favor of the native Object.assign
• 522828a Remove workarounds for old Node.js versions
• 40e0f00 chore: Remove second NPM badge
• ab91bf6 chore: Remove Slack badge
• 6853a80 chore: Cleanup status badges
• fb1109c chore: Bump minimum engine version to v10
• d185440 chore: Add basic Node version support policy
• db25736 chore: Bump node-gyp to 7.1.0
• 2c5b110 chore: Bump cross-spawn to v7.0.3
• 38b9633 chore: Update Istanbul to NYC
• d63b5bf chore: Bump mocha to v8.1.3
• d0d8865 chore: Skip constructor tests on v14.6+
• ee3984d chore: Hoist test ESLint config
• feee448 chore: Remove disabled and recommended rules

See the full diff

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