Bump networkx from 2.8.7 to 3.0

Bumps [networkx](https://github.com/networkx/networkx) from 2.8.7 to 3.0.
- [Release notes](https://github.com/networkx/networkx/releases)
- [Commits](networkx/networkx@networkx-2.8.7...networkx-3.0)

---
updated-dependencies:
- dependency-name: networkx
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

requirements.txt

@@ -2,7 +2,7 @@ raiden-common==0.1.8
 
 sentry-sdk[flask]==1.9.0
 prometheus_client==0.15.0
-networkx==2.8.7
+networkx==3.0
 
 jaeger-client==4.8.0
 dbapi-opentracing==0.0.5