chore: upgrade all dependencies to latest versions

Bump all dev and runtime dependency minimums to their latest releases:
pydot 4.0.1, ruff 0.15.8, pytest-cov 7.1.0, pytest-benchmark 5.2.3,
pytest-asyncio 1.3.0, django 6.0.3, furo 2025.12.19, pyright 1.1.408,
among others. Update ruff pre-commit hook to v0.15.8.

Adjust Python version markers for django (>=3.12), pytest-asyncio
(>=3.10), and pytest-django (>=3.10) to match new minimum requirements.

Fix pydot 4.x compatibility: type annotations for Edge kwargs and
diagram test for attribute quoting change.

Author: fgmacedo

.pre-commit-config.yaml

@@ -9,7 +9,7 @@ repos:
         exclude: docs/auto_examples
 - repo: https://github.com/charliermarsh/ruff-pre-commit
   # Ruff version.
-  rev: v0.15.0
+  rev: v0.15.8
   hooks:
     # Run the linter.
     - id: ruff

pyproject.toml

@@ -28,36 +28,37 @@ requires-python = ">=3.9"
 homepage = "https://github.com/fgmacedo/python-statemachine"
 
 [project.optional-dependencies]
-diagrams = ["pydot >= 2.0.0"]
+diagrams = ["pydot >= 4.0.1"]
 
 [dependency-groups]
 dev = [
-    "ruff >=0.15.0",
+    "ruff >=0.15.8",
     "pre-commit",
     "mypy",
     "pytest",
-    "pytest-cov >=6.0.0; python_version >='3.9'",
+    "pytest-cov >=7.1.0; python_version >='3.9'",
     "pytest-cov; python_version <'3.9'",
-    "pytest-sugar >=1.0.0",
-    "pytest-mock >=3.14.0",
-    "pytest-benchmark >=4.0.0",
-    "pytest-asyncio >=0.25.0",
+    "pytest-sugar >=1.1.1",
+    "pytest-mock >=3.15.1",
+    "pytest-benchmark >=5.2.3",
+    "pytest-asyncio >=1.3.0; python_version >='3.10'",
+    "pytest-asyncio >=0.25.0; python_version <'3.10'",
     "pydot",
-    "django >=5.2.11; python_version >='3.10'",
-    "pytest-django >=4.8.0; python_version >'3.8'",
+    "django >=6.0.3; python_version >='3.12'",
+    "pytest-django >=4.12.0; python_version >='3.10'",
     "Sphinx; python_version >'3.8'",
     "sphinx-gallery; python_version >'3.8'",
     "myst-parser; python_version >'3.8'",
     "pillow; python_version >'3.8'",
     "sphinx-autobuild; python_version >'3.8'",
-    "furo >=2024.5.6; python_version >'3.8'",
+    "furo >=2025.12.19; python_version >'3.8'",
     "sphinx-copybutton >=0.5.2; python_version >'3.8'",
     "sphinxcontrib-mermaid; python_version >'3.8'",
-    "pdbr>=0.8.9; python_version >'3.8'",
-    "babel >=2.16.0; python_version >='3.8'",
-    "pytest-xdist>=3.6.1",
-    "pytest-timeout>=2.3.1",
-    "pyright>=1.1.400",
+    "pdbr>=0.9.7; python_version >'3.8'",
+    "babel >=2.18.0; python_version >='3.8'",
+    "pytest-xdist>=3.8.0",
+    "pytest-timeout>=2.4.0",
+    "pyright>=1.1.408",
 ]
 
 [build-system]

statemachine/contrib/diagram/renderers/dot.py

@@ -1,5 +1,6 @@
 from dataclasses import dataclass
 from dataclasses import field
+from typing import Any
 from typing import Dict
 from typing import List
 from typing import Optional
@@ -210,7 +211,7 @@ def _render_initial_arrow(
         initial_node = self._create_initial_node(initial_node_id)
         added_to_atomic = False
 
-        extra = {}
+        extra: Dict[str, Any] = {}
         if initial_state.children:
             extra["lhead"] = f"cluster_{initial_state.id}"
 
@@ -483,9 +484,9 @@ def _resolve_edge_endpoints(
         self,
         transition: DiagramTransition,
         target_id: Optional[str],
-    ) -> "tuple[str, str, Dict[str, str]]":
+    ) -> "tuple[str, str, Dict[str, Any]]":
         """Resolve source/destination node IDs and cluster attributes for an edge."""
-        extra: Dict[str, str] = {}
+        extra: Dict[str, Any] = {}
         source_is_compound = transition.source in self._compound_ids
         target_is_compound = target_id is not None and target_id in self._compound_ids
 

tests/test_contrib_diagram.py

@@ -384,7 +384,8 @@ class parent(State.Compound, name="Parent"):
         enter = start.to(parent)
 
     dot = DotGraphMachine(SM)().to_string()
-    assert "lhead=cluster_parent" in dot
+    assert "lhead=" in dot
+    assert "cluster_parent" in dot
 
 
 def test_initial_edge_inside_compound_subgraph():