Update php-http/mock-client requirement from ^1.0 to ^1.5
Update php-http/mock-client requirement from ^1.0 to ^1.5

Updates the requirements on [php-http/mock-client](https://github.com/php-http/mock-client) to permit the latest version.
- [Release notes](https://github.com/php-http/mock-client/releases)
- [Changelog](https://github.com/php-http/mock-client/blob/master/CHANGELOG.md)
- [Commits](https://github.com/php-http/mock-client/compare/1.0.0...1.5.0)

---
updated-dependencies:
- dependency-name: php-http/mock-client
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@github.com>
web-token/jwt-framework