Running latest with latest rules_python fails on trying to use Python 3.8

[Ahajha]

Repro:
I have a local rules_python checked out at ~/Documents/rules_python, at the current latest commit: 2a2e136c2a4e393f5c84d90684680e01690278e3

Going to e2e/pdm/vendored_lock_file_bzlmod (probably will fail in the same way with others) I get:

$ bazel build ... --override_module=rules_python=~/Documents/rules_python
INFO: Repository rules_pycross++toolchains+pycross_toolchains instantiated at:
  <builtin>: in <toplevel>
Repository rule pycross_toolchains_repo defined at:
  /home/alextrotta/.cache/bazel/_bazel_alextrotta/e0ec58afde134c1ece0f1b3d6f11eb23/external/rules_pycross+/pycross/private/toolchain_helpers.bzl:401:42: in <toplevel>
ERROR: /home/alextrotta/.cache/bazel/_bazel_alextrotta/e0ec58afde134c1ece0f1b3d6f11eb23/external/rules_pycross+/pycross/private/toolchain_helpers.bzl:20:9: An error occurred during the fetch of repository 'rules_pycross++toolchains+pycross_toolchains':
   Traceback (most recent call last):
        File "/home/alextrotta/.cache/bazel/_bazel_alextrotta/e0ec58afde134c1ece0f1b3d6f11eb23/external/rules_pycross+/pycross/private/toolchain_helpers.bzl", line 389, column 46, in _pycross_toolchain_repo_impl
                computed_toolchains = _compute_toolchains(
        File "/home/alextrotta/.cache/bazel/_bazel_alextrotta/e0ec58afde134c1ece0f1b3d6f11eb23/external/rules_pycross+/pycross/private/toolchain_helpers.bzl", line 138, column 36, in _compute_toolchains
                for version in _dedupe_versions(python_versions):
        File "/home/alextrotta/.cache/bazel/_bazel_alextrotta/e0ec58afde134c1ece0f1b3d6f11eb23/external/rules_pycross+/pycross/private/toolchain_helpers.bzl", line 71, column 43, in _dedupe_versions
                micro_version = _get_micro_version(version)
        File "/home/alextrotta/.cache/bazel/_bazel_alextrotta/e0ec58afde134c1ece0f1b3d6f11eb23/external/rules_pycross+/pycross/private/toolchain_helpers.bzl", line 20, column 9, in _get_micro_version
                fail("Unknown Python version: {}".format(version))
Error in fail: Unknown Python version: 3.8
ERROR: Analysis of target '//:test_regex' failed; build aborted: Unknown Python version: 3.8
INFO: Elapsed time: 3.960s, Critical Path: 0.00s
INFO: 1 process: 1 internal.
ERROR: Build did NOT complete successfully
FAILED: 
    Fetching repository @@rules_pycross++environments+rules_pycross_e2e_environments; starting

rules_python recently dropped 3.8 support, which is definitely related, but I don't see any explicit references to it so this is likely a bug, but I don't know if the bug is here or with rules_python, the stack trace seems to suggest here though.

I'm seeing the same issue with an internal codebase as well, but this was easy to repro.

[Ahajha]

This seems to be an issue with rules_python, opened a PR there with a fix: bazel-contrib/rules_python#3446