Bump @manypkg/get-packages from 2.2.0 to 3.1.0

Bumps [@manypkg/get-packages](https://github.com/Thinkmill/manypkg/tree/HEAD/packages/get-packages) from 2.2.0 to 3.1.0.
- [Release notes](https://github.com/Thinkmill/manypkg/releases)
- [Changelog](https://github.com/Thinkmill/manypkg/blob/main/packages/get-packages/CHANGELOG.md)
- [Commits](https://github.com/Thinkmill/manypkg/commits/@manypkg/[email protected]/packages/get-packages)

---
updated-dependencies:
- dependency-name: "@manypkg/get-packages"
  dependency-version: 3.1.0
  dependency-type: direct:development
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

package.json

@@ -12,7 +12,7 @@
 	"devDependencies": {
 		"@changesets/cli": "2.29.2",
 		"@guardian/prettier": "workspace:*",
-		"@manypkg/get-packages": "2.2.0",
+		"@manypkg/get-packages": "3.1.0",
 		"@types/node": "24.10.0",
 		"husky": "9.1.4",
 		"lint-staged": "16.2.6",