build(deps): bump networkx from 2.6.3 to 3.1 (#2458)

Bumps [networkx](https://github.com/networkx/networkx) from 2.6.3 to 3.1.
- [Release notes](https://github.com/networkx/networkx/releases)
- [Commits](networkx/networkx@networkx-2.6.3...networkx-3.1)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Nicholas Car <nick@kurrawong.net>

pyproject.toml

@@ -42,7 +42,7 @@ python = "^3.8.1"
 isodate = "^0.6.0"
 pyparsing = ">=2.1.0,<4"
 berkeleydb = {version = "^18.1.0", optional = true}
-networkx = {version = "^2.0.0", optional = true}
+networkx = {version = ">=2,<4", optional = true}
 html5lib = {version = "^1.0", optional = true}
 lxml = {version = "^4.3.0", optional = true}