Bump github.com/apple/swift-nio-http2 from 1.37.0 to 1.38.0 (#36)

Bumps [github.com/apple/swift-nio-http2](https://github.com/apple/swift-nio-http2) from 1.37.0 to 1.38.0.
- [Release notes](https://github.com/apple/swift-nio-http2/releases)
- [Commits](apple/swift-nio-http2@1.37.0...1.38.0)

---
updated-dependencies:
- dependency-name: github.com/apple/swift-nio-http2
  dependency-version: 1.38.0
  dependency-type: indirect
...

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