Bump @mui/icons-material from 5.15.14 to 5.15.15 in /webui

Bumps [@mui/icons-material](https://github.com/mui/material-ui/tree/HEAD/packages/mui-icons-material) from 5.15.14 to 5.15.15.
- [Release notes](https://github.com/mui/material-ui/releases)
- [Changelog](https://github.com/mui/material-ui/blob/v5.15.15/CHANGELOG.md)
- [Commits](https://github.com/mui/material-ui/commits/v5.15.15/packages/mui-icons-material)

---
updated-dependencies:
- dependency-name: "@mui/icons-material"
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

webui/package-lock.json

@@ -11,7 +11,7 @@
         "@emotion/react": "^11.11.4",
         "@emotion/styled": "^11.11.5",
         "@fontsource/inter": "^5.0.17",
-        "@mui/icons-material": "^5.15.14",
+        "@mui/icons-material": "^5.15.15",
         "@mui/material": "^5.15.15",
         "i18next": "^23.10.1",
         "i18next-browser-languagedetector": "^7.2.1",
@@ -1167,9 +1167,9 @@
       }
     },
     "node_modules/@mui/icons-material": {
-      "version": "5.15.14",
-      "resolved": "https://registry.npmjs.org/@mui/icons-material/-/icons-material-5.15.14.tgz",
-      "integrity": "sha512-vj/51k7MdFmt+XVw94sl30SCvGx6+wJLsNYjZRgxhS6y3UtnWnypMOsm3Kmg8TN+P0dqwsjy4/fX7B1HufJIhw==",
+      "version": "5.15.15",
+      "resolved": "https://registry.npmjs.org/@mui/icons-material/-/icons-material-5.15.15.tgz",
+      "integrity": "sha512-kkeU/pe+hABcYDH6Uqy8RmIsr2S/y5bP2rp+Gat4CcRjCcVne6KudS1NrZQhUCRysrTDCAhcbcf9gt+/+pGO2g==",
       "dependencies": {
         "@babel/runtime": "^7.23.9"
       },