ruff: pin version used for checks

By default "uv tool run" will manage tools separately, and install the
latest version of the tools unless a version is specified.

Makefile

@@ -4,6 +4,8 @@ all:
 
 SOURCES = hwbench csv graph
 
+RUFF_VERSION = 0.8.6
+
 update_deps:
 	uv sync -U
 
@@ -18,20 +20,20 @@ clean:
 
 check:
 	@uv lock --locked || echo "Your lock file should change because you probably added a dependency or bump the minimal Python version. Please run `uv lock`"
-	uv tool run ruff format --diff $(SOURCES)
-	uv tool run ruff check $(SOURCES)
+	uv tool run ruff@$(RUFF_VERSION) format --diff $(SOURCES)
+	uv tool run ruff@$(RUFF_VERSION) check $(SOURCES)
 	uv run mypy $(SOURCES)
 	uv run pytest $(SOURCES)
 
 check_ci:
 	@uv lock --locked || echo "Your lock file should change because you probably added a dependency or bump the minimal Python version, but this is not allowed in the CI. Please run `uv lock`"
-	uv tool run ruff format --diff $(SOURCES)
-	uv tool run ruff check --output-format=github $(SOURCES)
+	uv tool run ruff@$(RUFF_VERSION) format --diff $(SOURCES)
+	uv tool run ruff@$(RUFF_VERSION) check --output-format=github $(SOURCES)
 	uv run mypy $(SOURCES)
 	uv run pytest $(SOURCES)
 
 bundle:
 	uv build
 
 format:
-	uv tool run ruff format $(SOURCES)
+	uv tool run ruff@$(RUFF_VERSION) format $(SOURCES)