Add Python 3.13, 3.14

[lalten]

Fixes this error:

ERROR: /mnt/data/bazel-user-root/45ef7d2bd11527ab6fca94135f0ad0a0/external/rules_python++pip+rules_fuzzing_py_deps/absl_py/BUILD.bazel:5:12: configurable attribute "actual" in @@rules_python++pip+rules_fuzzing_py_deps//absl_py:_no_matching_repository doesn't match this configuration: No matching wheel for current configuration's Python version.

The current build configuration's Python version doesn't match any of the Python
wheels available for this distribution. This distribution supports the following Python
configuration settings:
    //_config:is_cp310
    //_config:is_cp311
    //_config:is_cp312
    //_config:is_cp38
    //_config:is_cp39

To determine the current configuration's Python version, run:
    `bazel config <config id>` (shown further below)

For the current configuration value see the debug message above that is
printing the current flag values. If you can't see the message, then re-run the
build to make it a failure instead by running the build with:
    --@@rules_python+//python/config_settings:current_config=fail

However, the command above will hide the `bazel config <config id>` message.


This instance of @@rules_python++pip+rules_fuzzing_py_deps//absl_py:_no_matching_repository has configuration identifier fba5e1b. To inspect its configuration, run: bazel config fba5e1b.

For more help, see https://bazel.build/docs/configurable-attributes#faq-select-choose-condition.

I haven't seen any actual dependency on the Python versions so it seems to just be a matter of amending the list here.

https://github.com/bazel-contrib/rules_fuzzing/blob/7a7159c2952e3eddfaae3fc273c8d0e7b0423151/fuzzing/requirements.txt could be updated in a separate step but it also doesn't seem necessary by itself.

[fmeum]

Thanks for sending this. It needs a bump to rules_python that I bundled into #286. There docs failures that I'll attempt to fix over there.

[lalten]

thanks! Will close this in favor of #286 then :)