Bump github.com/alibaba/sentinel-golang from 1.0.1 to 1.0.2

Bumps [github.com/alibaba/sentinel-golang](https://github.com/alibaba/sentinel-golang) from 1.0.1 to 1.0.2.
- [Release notes](https://github.com/alibaba/sentinel-golang/releases)
- [Commits](https://github.com/alibaba/sentinel-golang/compare/v1.0.1...v1.0.2

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