deps(deps): update networkx requirement from ^2.6 to ^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)
- [Commits](networkx/networkx@networkx-2.6...networkx-3.4.2)

---
updated-dependencies:
- dependency-name: networkx
  dependency-version: 3.4.2
  dependency-type: direct:production
...

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

Author: dependabot[bot]

pyproject.toml

@@ -20,7 +20,7 @@ authors = [{ name = "F. F. Martinez Gamo" }]
 [tool.poetry.dependencies]
 python = "^3.10"
 # Minimal core - truly minimal for primality testing
-networkx = {version = "^2.6", optional = true}
+networkx = {version = "^3.4", optional = true}
 cachetools = {version = "^5.0", optional = true}
 numpy = {version = "^1.24", optional = true}
 scipy = {version = "^1.9", optional = true}