Bump the percy group with 2 updates

Bumps the percy group with 2 updates: [@percy/core](https://github.com/percy/cli/tree/HEAD/packages/core) and [@percy/cli](https://github.com/percy/cli/tree/HEAD/packages/cli).


Updates `@percy/core` from 1.30.2 to 1.30.4
- [Release notes](https://github.com/percy/cli/releases)
- [Commits](https://github.com/percy/cli/commits/v1.30.4/packages/core)

Updates `@percy/cli` from 1.30.2 to 1.30.4
- [Release notes](https://github.com/percy/cli/releases)
- [Commits](https://github.com/percy/cli/commits/v1.30.4/packages/cli)

---
updated-dependencies:
- dependency-name: "@percy/core"
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: percy
- dependency-name: "@percy/cli"
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: percy
...

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

package.json

@@ -96,7 +96,7 @@
     "@actions/github": "^6.0.0",
     "@jest/environment": "^29.5.0",
     "@octokit/rest": "21.0.2",
-    "@percy/core": "^1.30.2",
+    "@percy/core": "^1.30.4",
     "@types/browser-sync": "^2.29.0",
     "@types/express": "^5.0.0",
     "@types/gulp": "^4.0.17",

packages/govuk-frontend-review/package.json

@@ -45,7 +45,7 @@
   "devDependencies": {
     "@govuk-frontend/helpers": "*",
     "@govuk-frontend/tasks": "*",
-    "@percy/cli": "^1.30.2",
+    "@percy/cli": "^1.30.4",
     "@rollup/plugin-commonjs": "^26.0.1",
     "@rollup/plugin-node-resolve": "^15.2.3",
     "@rollup/plugin-terser": "^0.4.4",