test(apply_fixes): Test setup uses rules_python version requested by DWYU

Author: martis42

test/apply_fixes/execution_logic.py

@@ -26,7 +26,10 @@
 
 bazel_dep(name = "bazel_skylib", version = "1.6.1")
 
-bazel_dep(name = "rules_python", version = "0.27.1")
+# We specify by design an outdated rules_python version.
+# bzlmod resolves dependencies to the maximum of all requested versions for all involved modules.
+# Specifying an ancient version here gives us in the end whatever rules_python version DWYU defines as dependency.
+bazel_dep(name = "rules_python", version = "0.12.0")
 python = use_extension("@rules_python//python/extensions:python.bzl", "python")
 python.toolchain(python_version = "3.8")