Pin dependency rehype-katex to 5.0.0 (#386)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

Author: renovate[bot]

package.json

@@ -23,7 +23,7 @@
     "prism-react-renderer": "1.2.1",
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
-    "rehype-katex": "^5.0.0",
+    "rehype-katex": "5.0.0",
     "remark-math": "3.0.1"
   },
   "browserslist": {

yarn.lock

@@ -8011,7 +8011,7 @@ regjsparser@^0.6.4:
   dependencies:
     jsesc "~0.5.0"
 
-rehype-katex@^5.0.0:
+rehype-katex@5.0.0:
   version "5.0.0"
   resolved "https://registry.yarnpkg.com/rehype-katex/-/rehype-katex-5.0.0.tgz#b556f24fde918f28ba1cb642ea71c7e82f3373d7"
   integrity sha512-ksSuEKCql/IiIadOHiKRMjypva9BLhuwQNascMqaoGLDVd0k2NlE2wMvgZ3rpItzRKCd6vs8s7MFbb8pcR0AEg==