fix: upgrade @mui/icons-material from 5.11.0 to 5.15.18

Snyk has created this PR to upgrade @mui/icons-material from 5.11.0 to 5.15.18.

See this package in npm:
@mui/icons-material

See this project in Snyk:
https://app.snyk.io/org/mattboddy47-w92/project/1d7cfaa2-69bf-4d94-a943-954ef56ac232?utm_source=github&utm_medium=referral&page=upgrade-pr

Author: snyk-bot

package-lock.json

@@ -3,7 +3,7 @@
   "version": "0.1.0",
   "private": true,
   "dependencies": {
-    "@mui/icons-material": "^5.10.6",
+    "@mui/icons-material": "^5.15.18",
     "@testing-library/jest-dom": "^5.16.5",
     "@testing-library/react": "^13.4.0",
     "@testing-library/user-event": "^13.5.0",