Bump babel-plugin-styled-components from 1.10.7 to 2.0.7 in /client

Bumps [babel-plugin-styled-components](https://github.com/styled-components/babel-plugin-styled-components) from 1.10.7 to 2.0.7.
- [Release notes](https://github.com/styled-components/babel-plugin-styled-components/releases)
- [Commits](styled-components/babel-plugin-styled-components@v1.10.7...v2.0.7)

---
updated-dependencies:
- dependency-name: babel-plugin-styled-components
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

client/package.json

@@ -15,7 +15,7 @@
     "@types/react-dom": "^16.9.14",
     "@types/react-measure": "^2.0.8",
     "avers": "^0.18.1-alpha.155",
-    "babel-plugin-styled-components": "^1.13.3",
+    "babel-plugin-styled-components": "^2.0.7",
     "computation": "^2.0.2",
     "d3-array": "^2.12.1",
     "d3-axis": "^1.0.12",