Bump orjson from 3.6.4 to 3.6.7 in /docker

Bumps [orjson](https://github.com/ijl/orjson) from 3.6.4 to 3.6.7.
- [Release notes](https://github.com/ijl/orjson/releases)
- [Changelog](https://github.com/ijl/orjson/blob/master/CHANGELOG.md)
- [Commits](ijl/orjson@3.6.4...3.6.7)

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

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

docker/requirements.txt

@@ -29,7 +29,7 @@ google-cloud-logging==1.12.1
 humanize==1.0.0
 hurry.filesize==0.9
 isort==5.10.1
-orjson==3.6.4
+orjson==3.6.7
 # importlib-metadata<4: in dev/requirements, jupyter depends on (an unpinned) ipykernel which needs importlib-metadata<4
 importlib-metadata<4
 janus==0.6.1