chore: bump the all group across 1 directory with 2 updates

Bumps the all group with 2 updates in the /examples/msal-node directory: [@azure/keyvault-secrets](https://github.com/Azure/azure-sdk-for-js) and [@azure/msal-node](https://github.com/AzureAD/microsoft-authentication-library-for-js).


Updates `@azure/keyvault-secrets` from 4.7.0 to 4.9.0
- [Release notes](https://github.com/Azure/azure-sdk-for-js/releases)
- [Changelog](https://github.com/Azure/azure-sdk-for-js/blob/main/documentation/Changelog-for-next-generation.md)
- [Commits](https://github.com/Azure/azure-sdk-for-js/compare/@azure/keyvault-secrets_4.7.0...@azure/keyvault-secrets_4.9.0)

Updates `@azure/msal-node` from 2.0.2 to 2.15.0
- [Release notes](https://github.com/AzureAD/microsoft-authentication-library-for-js/releases)
- [Commits](AzureAD/microsoft-authentication-library-for-js@msal-node-v2.0.2...msal-node-v2.15.0)

---
updated-dependencies:
- dependency-name: "@azure/keyvault-secrets"
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all
- dependency-name: "@azure/msal-node"
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: all
...

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