fix: upgrade react-markdown from 7.0.1 to 7.1.2

Snyk has created this PR to upgrade react-markdown from 7.0.1 to 7.1.2.

See this package in npm:
react-markdown

See this project in Snyk:
https://app.snyk.io/org/z-byte-prog/project/bf7fcc6f-f760-47b2-9c7e-32202be89de4?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -67,7 +67,7 @@
     "react": "^17.0.2",
     "react-dom": "^17.0.2",
     "react-is": "^17.0.2",
-    "react-markdown": "^7.0.1",
+    "react-markdown": "^7.1.2",
     "react-syntax-highlighter": "^15.4.4",
     "redis": "^3.1.2",
     "redis-mock": "^0.56.3",