Bump datasource-proxy from 1.6 to 1.7
Bump datasource-proxy from 1.6 to 1.7

Bumps [datasource-proxy](https://github.com/ttddyy/datasource-proxy) from 1.6 to 1.7.
- [Release notes](https://github.com/ttddyy/datasource-proxy/releases)
- [Changelog](https://github.com/ttddyy/datasource-proxy/blob/1.x/CHANGELOG.md)
- [Commits](https://github.com/ttddyy/datasource-proxy/compare/datasource-proxy-1.6...datasource-proxy-1.7)

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