Bump @mui/styles from 5.15.20 to 5.15.21

Bumps [@mui/styles](https://github.com/mui/material-ui/tree/HEAD/packages/mui-styles) from 5.15.20 to 5.15.21.
- [Release notes](https://github.com/mui/material-ui/releases)
- [Changelog](https://github.com/mui/material-ui/blob/v5.15.21/CHANGELOG.md)
- [Commits](https://github.com/mui/material-ui/commits/v5.15.21/packages/mui-styles)

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

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

package.json

@@ -10,7 +10,7 @@
     "@emotion/styled": "^11.11.5",
     "@mui/icons-material": "^5.15.20",
     "@mui/material": "^5.15.20",
-    "@mui/styles": "^5.15.20",
+    "@mui/styles": "^5.15.21",
     "dwv": "0.33.1",
     "react": "^18.3.1",
     "react-dom": "^18.3.1",

yarn.lock

@@ -1816,10 +1816,10 @@
     csstype "^3.1.3"
     prop-types "^15.8.1"
 
-"@mui/styles@^5.15.20":
-  version "5.15.20"
-  resolved "https://registry.yarnpkg.com/@mui/styles/-/styles-5.15.20.tgz#895e930d527863cec5731ec3c775057f7237cade"
-  integrity sha512-zpXYhNxQ9A4zxF3IRQRZRUg7fXYj6Wfa3nB+7yOLVecokhjCAr1zY2VC5Uznf5qs2cfgBRfmDkBYqvQjHWf2uA==
+"@mui/styles@^5.15.21":
+  version "5.15.21"
+  resolved "https://registry.yarnpkg.com/@mui/styles/-/styles-5.15.21.tgz#f118a6ef76ce3e362d8d9e6951f5bbf8c7f2e2bd"
+  integrity sha512-XYGRd25kE31GCapoftHrWrhr3zCNZypraBO+UAWNaguSRZ24HAHEOxEkAOTXt71BzFgW7S0qoE4jmyx8DfgZIg==
   dependencies:
     "@babel/runtime" "^7.23.9"
     "@emotion/hash" "^0.9.1"