Bump httpcore from 1.0.2 to 1.0.3

Bumps [httpcore](https://github.com/encode/httpcore) from 1.0.2 to 1.0.3.
- [Release notes](https://github.com/encode/httpcore/releases)
- [Changelog](https://github.com/encode/httpcore/blob/master/CHANGELOG.md)
- [Commits](https://github.com/encode/httpcore/compare/1.0.2...1.0.3)

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

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -19,7 +19,7 @@ h11==0.14.0
 h2==4.1.0
 hpack==4.0.0
 hstspreload==2024.2.1
-httpcore==1.0.2
+httpcore==1.0.3
 httpx==0.26.0
 hyperframe==6.0.1
 idna==3.6