ci(deps): bump the copilotkit group with 3 updates

Bumps the copilotkit group with 3 updates: [@copilotkit/runtime](https://github.com/CopilotKit/CopilotKit), [@copilotkit/a2ui-renderer](https://github.com/CopilotKit/CopilotKit/tree/HEAD/packages/a2ui-renderer) and [@copilotkit/react-core](https://github.com/CopilotKit/CopilotKit).


Updates `@copilotkit/runtime` from 1.56.5 to 1.57.1
- [Release notes](https://github.com/CopilotKit/CopilotKit/releases)
- [Changelog](https://github.com/CopilotKit/CopilotKit/blob/main/changelog.txt)
- [Commits](CopilotKit/CopilotKit@v1.56.5...v1.57.1)

Updates `@copilotkit/a2ui-renderer` from 1.56.5 to 1.57.1
- [Release notes](https://github.com/CopilotKit/CopilotKit/releases)
- [Changelog](https://github.com/CopilotKit/CopilotKit/blob/main/packages/a2ui-renderer/CHANGELOG.md)
- [Commits](https://github.com/CopilotKit/CopilotKit/commits/v1.57.1/packages/a2ui-renderer)

Updates `@copilotkit/react-core` from 1.56.5 to 1.57.1
- [Release notes](https://github.com/CopilotKit/CopilotKit/releases)
- [Changelog](https://github.com/CopilotKit/CopilotKit/blob/main/changelog.txt)
- [Commits](CopilotKit/CopilotKit@v1.56.5...v1.57.1)

---
updated-dependencies:
- dependency-name: "@copilotkit/runtime"
  dependency-version: 1.57.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: copilotkit
- dependency-name: "@copilotkit/a2ui-renderer"
  dependency-version: 1.57.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: copilotkit
- dependency-name: "@copilotkit/react-core"
  dependency-version: 1.57.1
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: copilotkit
...

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

Author: dependabot[bot]

package.json

@@ -42,7 +42,7 @@
   },
   "dependencies": {
     "@ag-ui/client": "0.0.53",
-    "@copilotkit/runtime": "^1.56.5",
+    "@copilotkit/runtime": "^1.57.1",
     "@tailwindcss/node": "^4.3.0",
     "@tailwindcss/oxide": "^4.3.0",
     "ignore": "^7.0.5",
@@ -54,8 +54,8 @@
     "zod-to-json-schema": "^3.25.2"
   },
   "devDependencies": {
-    "@copilotkit/a2ui-renderer": "^1.56.5",
-    "@copilotkit/react-core": "^1.56.5",
+    "@copilotkit/a2ui-renderer": "^1.57.1",
+    "@copilotkit/react-core": "^1.57.1",
     "@testing-library/react": "^16.0.0",
     "@types/react": "^19.0.0",
     "@types/react-dom": "^19.0.0",