Also fix how the Python interpreter is loaded

Author: rjhuijsman

bazel/pypi_repos.bzl

@@ -5,9 +5,9 @@ generated by the `bazel run :requirements.update` command."""
 
 load("@rules_python//python:pip.bzl", "pip_parse")
 
-def pypi_repos():
+def pypi_repos(python_interpreter_target = "@python3_10_12_host//:python"):
     pip_parse(
         name = "pyprotoc_plugin_pypi",
-        python_interpreter_target = "@python3_10_12_host//:python",
+        python_interpreter_target = python_interpreter_target,
         requirements_lock = "@com_github_reboot_dev_pyprotoc_plugin//:requirements_lock.txt",
     )