Add rules_python dependency.

prebuilts/build-tools will now rely on rules_python to
register a python toolchain. We need python for pkg_install.

Bug: 372860136
Change-Id: I9289f9fd94ec277c6e4b79c2e51081dcb345d826

gbl/bazel.MODULE.bazel

diff --git a/gbl/bazel.MODULE.bazel b/gbl/bazel.MODULE.bazel
index 114ddbc..acbf452 100644
--- a/gbl/bazel.MODULE.bazel
+++ b/gbl/bazel.MODULE.bazel
@@ -39,6 +39,9 @@
 bazel_dep(
     name = "rules_pkg",
 )
+bazel_dep(
+    name = "rules_python",
+)
 
 local_path_override(
     module_name = "apple_support",