build(deps): bump postcss from 8.2.12 to 8.2.13 in /website (#787)

Bumps [postcss](https://github.com/postcss/postcss) from 8.2.12 to 8.2.13.
- [Release notes](https://github.com/postcss/postcss/releases)
- [Changelog](https://github.com/postcss/postcss/blob/main/CHANGELOG.md)
- [Commits](https://github.com/postcss/postcss/compare/8.2.12...8.2.13)

Signed-off-by: dependabot[bot] <support@github.com>

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

website/package-lock.json

@@ -11756,9 +11756,9 @@
             "integrity": "sha1-AerA/jta9xoqbAL+q7jB/vfgDqs="
         },
         "postcss": {
-            "version": "8.2.12",
-            "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.12.tgz",
-            "integrity": "sha512-BJnGT5+0q2tzvs6oQfnY2NpEJ7rIXNfBnZtQOKCIsweeWXBXeDd5k31UgTdS3d/c02ouspufn37mTaHWkJyzMQ==",
+            "version": "8.2.13",
+            "resolved": "https://registry.npmjs.org/postcss/-/postcss-8.2.13.tgz",
+            "integrity": "sha512-FCE5xLH+hjbzRdpbRb1IMCvPv9yZx2QnDarBEYSN0N0HYk+TcXsEhwdFcFb+SRWOKzKGErhIEbBK2ogyLdTtfQ==",
             "requires": {
                 "colorette": "^1.2.2",
                 "nanoid": "^3.1.22",

website/package.json

@@ -14,7 +14,7 @@
         "@docusaurus/preset-classic": "2.0.0-alpha.73",
         "@mdx-js/react": "^1.6.22",
         "clsx": "^1.1.1",
-        "postcss": "^8.2.12",
+        "postcss": "^8.2.13",
         "rapidoc": "^9.0.0",
         "react": "^17.0.2",
         "react-before-after-slider": "^1.0.4",