chore: upgrade @auth0/auth0-spa-js to v2.11.0 (#948)

## What
Upgrade `@auth0/auth0-spa-js` from `^2.9.x` to `^2.11.0`

## Why
This upgrade brings support for organization parameter in token exchange
operations, enabling better multi-tenant authentication scenarios.

## Changes
- Updated `@auth0/auth0-spa-js` dependency to `^2.11.0`
- Updated `exchangeToken` test to verify organization parameter handling

## What's new in spa-js v2.11.0
- Added organization parameter support to token exchange (#1477)
- Allows specifying organization context during token exchange flows

## Testing
- [x] Build passes: `npm run build`
- [x] Tests pass: `npm test`

## References
https://github.com/auth0/auth0-spa-js/releases/tag/v2.11.0

Author: yogeshchoudhary147

__tests__/auth-provider.test.tsx

@@ -903,12 +903,14 @@ describe('Auth0Provider', () => {
         subject_token: '__test_token__',
         subject_token_type: 'urn:test:token-type',
         scope: 'openid profile email',
+        organization: 'org_123',
       });
     });
     expect(clientMock.exchangeToken).toHaveBeenCalledWith({
       subject_token: '__test_token__',
       subject_token_type: 'urn:test:token-type',
       scope: 'openid profile email',
+      organization: 'org_123',
     });
     expect(response).toStrictEqual(tokenResponse);
   });

package-lock.json

@@ -95,6 +95,6 @@
     "react-dom": "^16.11.0 || ^17 || ^18 || ~19.0.1 || ~19.1.2 || ^19.2.1"
   },
   "dependencies": {
-    "@auth0/auth0-spa-js": "^2.9.1"
+    "@auth0/auth0-spa-js": "^2.11.0"
   }
 }