Bump Stun.Net from 6.2.0 to 7.0.0

Bumps [Stun.Net](https://github.com/HMBSbige/NatTypeTester) from 6.2.0 to 7.0.0.
- [Release notes](https://github.com/HMBSbige/NatTypeTester/releases)
- [Commits](https://github.com/HMBSbige/NatTypeTester/compare/6.2.0...7.0.0)

---
updated-dependencies:
- dependency-name: Stun.Net
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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