Bump opentracing-spring-web-starter from 3.0.1 to 4.0.0
Bump opentracing-spring-web-starter from 3.0.1 to 4.0.0

Bumps [opentracing-spring-web-starter](https://github.com/opentracing-contrib/java-spring-web) from 3.0.1 to 4.0.0.
- [Release notes](https://github.com/opentracing-contrib/java-spring-web/releases)
- [Changelog](https://github.com/opentracing-contrib/java-spring-web/blob/master/RELEASE.md)
- [Commits](https://github.com/opentracing-contrib/java-spring-web/compare/3.0.1...4.0.0)

Signed-off-by: dependabot-preview[bot] <5bdcd3c0d4d24ae3e71b3b452a024c6324c7e4bb@dependabot.com>
zalando/tracer,zalando/tracer