Bump guzzlehttp/psr7 from 1.6.1 to 1.8.5

Bumps [guzzlehttp/psr7](https://github.com/guzzle/psr7) from 1.6.1 to 1.8.5.
- [Release notes](https://github.com/guzzle/psr7/releases)
- [Changelog](https://github.com/guzzle/psr7/blob/1.8.5/CHANGELOG.md)
- [Commits](guzzle/psr7@1.6.1...1.8.5)

---
updated-dependencies:
- dependency-name: guzzlehttp/psr7
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>