[deps] Update networkx requirement from networkx>=2.6,<3.4

Updates the requirements on [networkx](https://github.com/networkx/networkx) to permit the latest version.

- [Release notes](https://github.com/networkx/networkx/releases)

---
updated-dependencies:
- dependency-name: networkx
  dependency-type: direct:production
...

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Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: Gagan Deep <[email protected]>

requirements.txt

@@ -1,4 +1,4 @@
 requests<3.0
 libcnml<0.10.0
 openvpn-status>=0.2,<0.3
-networkx>=2.0,<2.5
+networkx>=2.6,<3.4