drop bazel 6 support for pip_parse_vendored

Author: aignas

examples/pip_parse_vendored/.bazelrc

@@ -5,5 +5,6 @@ build --enable_runfiles
 
 # Vendoring requirements.bzl files isn't necessary under bzlmod
 # When workspace support is dropped, this example can be removed.
-build --noexperimental_enable_bzlmod
-common:bazel7.x --incompatible_python_disallow_native_rules
+common --noenable_bzlmod
+common --enable_workspace
+common --incompatible_python_disallow_native_rules