[Snyk] Fix for 4 vulnerabilities

[rohag-equinor]

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: - package.json - package-lock.json #### Vulnerabilities that will be fixed ##### With an upgrade: Severity | Priority Score (*) | Issue | Breaking Change | Exploit Maturity :-------------------------:|-------------------------|:-------------------------|:-------------------------|:-------------------------  | **479/1000**
**Why?** Has a fix available, CVSS 5.3 | Regular Expression Denial of Service (ReDoS)
[SNYK-JS-CSSWHAT-1298035](https://snyk.io/vuln/SNYK-JS-CSSWHAT-1298035) | Yes | No Known Exploit  | **479/1000**
**Why?** Has a fix available, CVSS 5.3 | Regular Expression Denial of Service (ReDoS)
[SNYK-JS-HIGHLIGHTJS-1048676](https://snyk.io/vuln/SNYK-JS-HIGHLIGHTJS-1048676) | No | No Known Exploit  | **520/1000**
**Why?** Has a fix available, CVSS 5.9 | Regular Expression Denial of Service (ReDoS)
[SNYK-JS-MARKED-584281](https://snyk.io/vuln/SNYK-JS-MARKED-584281) | No | No Known Exploit  | **696/1000**
**Why?** Proof of Concept exploit, Has a fix available, CVSS 7.5 | Regular Expression Denial of Service (ReDoS)
[SNYK-JS-NTHCHECK-1586032](https://snyk.io/vuln/SNYK-JS-NTHCHECK-1586032) | Yes | Proof of Concept (*) Note that the real score may have changed since the PR was raised.

Commit messages

Package name: rollup-plugin-postcss

The new version differs by 22 commits.

• 118253e fix: update to cssnano 5 (#357)
• a03c7bf build(deps): bump ini from 1.3.5 to 1.3.7 (#344)
• ceee1bc feat: upgrade postcss to 8.x
• 375412c change postcss to 8.x (#343)
• 6480f02 chore: upgrade dependencies (#342)
• 700eb14 chore: update postcss version to 8 (#325)
• 661c9ca chore: Fix typo in comment (#318)
• 3de028d fix: make sourceMaps relative to the CSS output file (#274)
• a7299a4 fix(types): `options` is actually optional (#311)
• 2946eae fix: extract css in same order as imports (#295)
• c38f356 fix: Typing of namedExports option
• a13a987 Fix typing of namedExports
• 7ce6415 build(deps): bump lodash from 4.17.15 to 4.17.19 (#294)
• 304538d fix: Add types file to package.json files (#297)
• cbab326 build(deps): bump elliptic from 6.5.2 to 6.5.3 (#300)
• f7f3fdb fix: allow module config while using autoModules (#281) (#292)
• 9489eca build: tweak release action
• a5fd035 fix: replace const keyword with var keyword in output (#283)
• b17c15d fix: revert "feat: allow multiple entry files and outputs (#264)" (#272)
• 3ea986c feat: allow multiple entry files and outputs (#264)
• b27c3eb docs: add v3 usage (#268)
• 91aa1e5 BREAKING CHANGE: upgrade rollup to v2 (#266)

See the full diff

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[fbosquet-azpn]

this review is superseeded by my review #236