cleanup: upgrade to rules_python 0.22.0

This is to get the fix that allows configuring pip to use the same
version of Python as the rules use.

MODULE.bazel

@@ -18,23 +18,23 @@ bazel_dep(
     dev_dependency = True,
     repo_name = "io_bazel_stardoc",
 )
-bazel_dep(name = "rules_python", version = "0.20.0", dev_dependency = True)
+bazel_dep(name = "rules_python", version = "0.22.0", dev_dependency = True)
 
 python = use_extension(
-    "@rules_python//python:extensions.bzl",
+    "@rules_python//python/extensions:python.bzl",
     "python",
     dev_dependency = True,
 )
 python.toolchain(
-    name = "python3_11",
+    name = "python_3_11",
     python_version = "3.11",
 )
 
 # NOTE: use_repo() must be called for each platform that runs the docgen tools
 use_repo(
     python,
-    "python3_11_toolchains",
-    "python3_11_x86_64-unknown-linux-gnu",
+    "python_3_11_toolchains",
+    "python_3_11_x86_64-unknown-linux-gnu",
 )
 
 # NOTE: This is actualy a dev dependency, but due to
@@ -50,15 +50,30 @@ use_repo(dev, "rules_testing_dev_toolchains")
 
 # NOTE: This call will be run by downstream users, so the
 # repos it mentions must exist.
-register_toolchains("@rules_testing_dev_toolchains//:all")
+register_toolchains(
+    "@rules_testing_dev_toolchains//:all",
+    dev_dependency = True,
+)
+
+interpreter = use_extension(
+    "@rules_python//python/extensions:interpreter.bzl",
+    "interpreter",
+    dev_dependency = True,
+)
+interpreter.install(
+    name = "python_3_11_interpreter",
+    python_name = "python_3_11",
+)
+use_repo(interpreter, "python_3_11_interpreter")
 
 pip = use_extension(
-    "@rules_python//python:extensions.bzl",
+    "@rules_python//python/extensions:pip.bzl",
     "pip",
     dev_dependency = True,
 )
 pip.parse(
     name = "docs-pypi",
+    python_interpreter_target = "@python_3_11_interpreter//:python",
     requirements_lock = "//docs:requirements.txt",
 )
 use_repo(pip, "docs-pypi")

dev_extension.bzl

@@ -29,7 +29,7 @@ def _dev_toolchains_repo_impl(rctx):
     # If its the root module, then we're in rules_testing and
     # it's a dev dependency situation.
     if rctx.attr.is_root:
-        toolchain_build = Label("@python3_11_toolchains//:BUILD.bazel")
+        toolchain_build = Label("@python_3_11_toolchains//:BUILD.bazel")
 
         # NOTE: This is brittle. It only works because, luckily,
         # rules_python's toolchain BUILD file is essentially self-contained.