fix(whl_library): :data needs to be data for the library (#4)

This patch fixes an oversight in the expansion of the `BUILD.bazel` file template to make the `:data` target which includes wheel installation content such as `/bin` entrypoints in the case of `ruff` as part of the library target pointed to by `py_requirement`.

This allows for py_library/py_binary/... consumers to take dependencies both on data files and on potential binary artifacts packaged as part of a PyPi "library" transparently via `py_requirement` and associated machinery.

Author: westberg-m

python/pip_install/private/generate_whl_library_build_bazel.bzl

@@ -258,7 +258,7 @@ def generate_whl_library_build_bazel(
     """
 
     additional_content = []
-    data = []
+    data = [":data"]
     srcs_exclude = []
     data_exclude = [] + data_exclude
     dependencies = sorted([normalize_name(d) for d in dependencies])