core: cleanup pyproject and makefile

Makefile

@@ -54,7 +54,7 b' clean:'
 # test: run test-clean and tests
 test:
 	make test-clean
-	unset RC_SQLALCHEMY_DB1_URL && unset RC_DB_URL && make test-only
+	make test-only
 
 
 .PHONY: test-clean

pyproject.toml

@@ -35,8 +35,7 b' dependencies = {file = ["requirements.tx'
 optional-dependencies.tests = {file = ["requirements_test.txt"]}
 
 [tool.ruff]
-
-select = [
+lint.select = [
     # Pyflakes
     "F",
     # Pycodestyle
@@ -45,16 +44,13 b' select = ['
     # isort
     "I001"
 ]
-
-ignore = [
+lint.ignore = [
     "E501",  # line too long, handled by black
 ]
-
 # Same as Black.
 line-length = 120
 
-[tool.ruff.isort]
-
+[tool.ruff.lint.isort]
 known-first-party = ["vcsserver"]
 
 [tool.ruff.format]
@@ -71,7 +67,6 b' skip-magic-trailing-comma = false'
 # Like Black, automatically detect the appropriate line ending.
 line-ending = "auto"
 
-
 [tool.bumpversion]
 current_version = "5.4.0"
 parse = "(?P<major>\\d+)\\.(?P<minor>\\d+)\\.(?P<patch>\\d+)"