Also fix how the Python interpreter is loaded

Author: rjhuijsman

bazel/pypi_repos.bzl

@@ -4,10 +4,11 @@ should be installed later in WORKSPACE file to be accessible.
 generated by the `bazel run :requirements.update` command."""
 
 load("@rules_python//python:pip.bzl", "pip_parse")
+load("@python3_10_12//:defs.bzl", "interpreter")
 
 def pypi_repos():
     pip_parse(
         name = "pyprotoc_plugin_pypi",
-        python_interpreter_target = "@python3_10_12_host//:python",
+        python_interpreter_target = interpreter,
         requirements_lock = "@com_github_reboot_dev_pyprotoc_plugin//:requirements_lock.txt",
     )