Bump postcss from 8.4.47 to 8.4.49 (internal-1991)

Bumps [postcss](https://github.com/postcss/postcss) from 8.4.47 to 8.4.49.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](postcss/postcss@8.4.47...8.4.49)

---
updated-dependencies:
- dependency-name: postcss
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

package.json

@@ -95,7 +95,7 @@
     "npm-run-all": "^4.1.5",
     "pixelmatch": "^6.0.0",
     "playwright": "^1.48.2",
-    "postcss": "^8.4.47",
+    "postcss": "^8.4.49",
     "postcss-cli": "^11.0.0",
     "postcss-inline-svg": "^6.0.0",
     "pretty-bytes": "^6.0.0",