Build(deps-dev): bump @types/styled-components from 4.1.8 to 4.1.20

Bumps [@types/styled-components](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/styled-components) from 4.1.8 to 4.1.20.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/styled-components)

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

package.json

@@ -161,7 +161,7 @@
     "@types/react-helmet": "^5.0.13",
     "@types/react-modal": "^3.10.0",
     "@types/react-select": "^3.0.5",
-    "@types/styled-components": "4.1.8",
+    "@types/styled-components": "4.1.20",
     "@typescript-eslint/eslint-plugin": "^1.13.0",
     "@typescript-eslint/parser": "^1.13.0",
     "babel-plugin-inline-react-svg": "^1.1.0",