requirements: update networkx requirement from <3.2 to <3.3

Updates the requirements on [networkx](https://github.com/networkx/networkx) to permit the latest version.
- [Release notes](https://github.com/networkx/networkx/releases)
- [Commits](networkx/networkx@networkx-0.23...networkx-3.2)

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

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

requirements.txt

@@ -9,7 +9,7 @@ leabra-psyneulink<0.3.3
 llvmlite<0.42
 matplotlib<3.7.3
 modeci_mdf<0.5, >=0.3.4; (platform_machine == 'AMD64' or platform_machine == 'x86_64') and platform_python_implementation == 'CPython' and implementation_name == 'cpython'
-networkx<3.2
+networkx<3.3
 numpy>=1.19.0, <1.24.5
 optuna<3.4.0
 packaging<24.0