chore: migrate from bumpver to bump-my-version for better reliability

pyproject.toml

@@ -40,18 +40,11 @@ dev = [
     "isort>=5.12.0",
     "mypy>=1.6.0",
     "ruff>=0.1.0",
-    "bumpver>=2025.1131",
+    "bump-my-version>=1.2.0",
 ]
 
-[tool.bumpver]
+[tool.bumpversion]
 current_version = "2.0.3"
-version_pattern = "MAJOR.MINOR.PATCH"
-commit_message = "Bump version {old_version} → {new_version}"
 commit = true
 tag = true
-push = false
-
-[[tool.bumpver.files]]
-filename = "pyproject.toml"
-search = 'version = "{current_version}"'
-replace = 'version = "{new_version}"'
+message = "Bump version: {current_version} → {new_version}"