Bump antd from 4.15.4 to 4.15.6 (#173)

Bumps [antd](https://github.com/ant-design/ant-design) from 4.15.4 to 4.15.6.
- [Release notes](https://github.com/ant-design/ant-design/releases)
- [Changelog](https://github.com/ant-design/ant-design/blob/master/CHANGELOG.en-US.md)
- [Commits](https://github.com/ant-design/ant-design/compare/4.15.4...4.15.6)

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

web/package.json

@@ -10,7 +10,7 @@
   },
   "dependencies": {
     "@ant-design/icons": "^4.6.2",
-    "antd": "^4.15.4",
+    "antd": "^4.15.6",
     "chart.js": "^3.2.1",
     "classnames": "^2.3.1",
     "date-fns": "^2.21.3",