Bump prettier in the prettier group across 1 directory

Bumps the prettier group with 1 update in the / directory: [prettier](https://github.com/prettier/prettier).


Updates `prettier` from 3.2.2 to 3.4.2
- [Release notes](https://github.com/prettier/prettier/releases)
- [Changelog](https://github.com/prettier/prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/prettier@3.2.2...3.4.2)

---
updated-dependencies:
- dependency-name: prettier
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: prettier
...

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

libs/@guardian/prettier/package.json

@@ -14,7 +14,7 @@
 	"devDependencies": {
 		"@guardian/eslint-config": "workspace:*",
 		"eslint": "9.14.0",
-		"prettier": "3.2.2",
+		"prettier": "3.4.2",
 		"tslib": "2.6.2",
 		"wireit": "0.14.8"
 	},

libs/@guardian/react-crossword/package.json

@@ -47,7 +47,7 @@
 		"dotenv": "16.4.1",
 		"eslint": "9.14.0",
 		"jest": "29.7.0",
-		"prettier": "3.3.3",
+		"prettier": "3.4.2",
 		"react": "18.2.0",
 		"rollup": "4.27.4",
 		"storybook": "8.4.1",

libs/@guardian/source/package.json

@@ -67,7 +67,7 @@
 		"jest": "29.7.0",
 		"lightningcss": "1.28.1",
 		"mkdirp": "3.0.1",
-		"prettier": "3.3.3",
+		"prettier": "3.4.2",
 		"react": "18.2.0",
 		"rollup": "4.27.4",
 		"storybook": "8.4.1",

package.json

@@ -16,7 +16,7 @@
 		"@types/node": "22.10.0",
 		"husky": "9.1.4",
 		"lint-staged": "15.2.10",
-		"prettier": "3.3.3",
+		"prettier": "3.4.2",
 		"sort-package-json": "2.10.0",
 		"syncpack": "13.0.0",
 		"typescript": "5.5.2",