Merge pull request #21 from remarkjs/renovate/katex-0.x

chore(deps): update dependency katex to ^0.13.0

Author: ChristianMurphy

package-lock.json

@@ -49,7 +49,7 @@
     "@types/react": "^17.0.0",
     "@types/react-dom": "^17.0.0",
     "husky": "^5.0.0",
-    "katex": "^0.12.0",
+    "katex": "^0.13.0",
     "react": "^17.0.0",
     "react-dom": "^17.0.0",
     "react-test-renderer": "^17.0.0",