Bump the dev-dependencies group in /proxy with 8 updates

Bumps the dev-dependencies group in /proxy with 8 updates:

| Package | From | To |
| --- | --- | --- |
| [black](https://github.com/psf/black) | `23.7.0` | `24.2.0` |
| [coverage](https://github.com/nedbat/coveragepy) | `7.3.0` | `7.4.2` |
| [flake8](https://github.com/pycqa/flake8) | `6.1.0` | `7.0.0` |
| [isort](https://github.com/pycqa/isort) | `5.12.0` | `5.13.2` |
| [mypy](https://github.com/python/mypy) | `1.5.1` | `1.8.0` |
| [types-pyyaml](https://github.com/python/typeshed) | `6.0.12.11` | `6.0.12.12` |
| [types-requests](https://github.com/python/typeshed) | `2.31.0.2` | `2.31.0.6` |
| [vcrpy](https://github.com/kevin1024/vcrpy) | `5.1.0` | `6.0.1` |


Updates `black` from 23.7.0 to 24.2.0
- [Release notes](https://github.com/psf/black/releases)
- [Changelog](https://github.com/psf/black/blob/main/CHANGES.md)
- [Commits](psf/black@23.7.0...24.2.0)

Updates `coverage` from 7.3.0 to 7.4.2
- [Release notes](https://github.com/nedbat/coveragepy/releases)
- [Changelog](https://github.com/nedbat/coveragepy/blob/master/CHANGES.rst)
- [Commits](nedbat/coveragepy@7.3.0...7.4.2)

Updates `flake8` from 6.1.0 to 7.0.0
- [Commits](PyCQA/flake8@6.1.0...7.0.0)

Updates `isort` from 5.12.0 to 5.13.2
- [Release notes](https://github.com/pycqa/isort/releases)
- [Changelog](https://github.com/PyCQA/isort/blob/main/CHANGELOG.md)
- [Commits](PyCQA/isort@5.12.0...5.13.2)

Updates `mypy` from 1.5.1 to 1.8.0
- [Changelog](https://github.com/python/mypy/blob/master/CHANGELOG.md)
- [Commits](python/mypy@v1.5.1...v1.8.0)

Updates `types-pyyaml` from 6.0.12.11 to 6.0.12.12
- [Commits](https://github.com/python/typeshed/commits)

Updates `types-requests` from 2.31.0.2 to 2.31.0.6
- [Commits](https://github.com/python/typeshed/commits)

Updates `vcrpy` from 5.1.0 to 6.0.1
- [Release notes](https://github.com/kevin1024/vcrpy/releases)
- [Changelog](https://github.com/kevin1024/vcrpy/blob/master/docs/changelog.rst)
- [Commits](kevin1024/vcrpy@v5.1.0...v6.0.1)

---
updated-dependencies:
- dependency-name: black
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: coverage
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
- dependency-name: flake8
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
- dependency-name: isort
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
- dependency-name: mypy
  dependency-type: direct:development
  update-type: version-update:semver-minor
  dependency-group: dev-dependencies
- dependency-name: types-pyyaml
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: types-requests
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: dev-dependencies
- dependency-name: vcrpy
  dependency-type: direct:development
  update-type: version-update:semver-major
  dependency-group: dev-dependencies
...

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