Bump @guardian/prettier from 0.5.0 to 0.7.0

Bumps [@guardian/prettier](https://github.com/guardian/configs) from 0.5.0 to 0.7.0.
- [Release notes](https://github.com/guardian/configs/releases)
- [Commits](guardian/configs@v0.5.0...v0.7.0)

---
updated-dependencies:
- dependency-name: "@guardian/prettier"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -19,7 +19,7 @@
     "@babel/preset-react": "^7.12.13",
     "@emotion/jest": "^11.3.0",
     "@guardian/eslint-config-typescript": "^0.5.0",
-    "@guardian/prettier": "^0.5.0",
+    "@guardian/prettier": "^0.7.0",
     "@guardian/libs": "^3.1.0",
     "@storybook/react": "^6.1.0",
     "@types/jest": "^26.0.20",