Bump httpcore from 1.0.5 to 1.0.6 in /src (#48)

Bumps [httpcore](https://github.com/encode/httpcore) from 1.0.5 to 1.0.6.
- [Release notes](https://github.com/encode/httpcore/releases)
- [Changelog](https://github.com/encode/httpcore/blob/master/CHANGELOG.md)
- [Commits](encode/httpcore@1.0.5...1.0.6)

---
updated-dependencies:
- dependency-name: httpcore
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

src/requirements.txt

@@ -19,7 +19,7 @@ h2==4.1.0
     # via httpx
 hpack==4.0.0
     # via h2
-httpcore==1.0.5
+httpcore==1.0.6
     # via httpx
 httpx[http2]==0.27.2
     # via -r requirements.in