Fix astral-test-pypa-gh-action publish test bug in patch version retrieval (#18174)

The jq filter used `.files[-1].filename` to get the latest published
version then uses sed to extract the version from a sdist filename, but
the last file in the list can be a wheel rather than an sdist in the
middle of an upload. When it's a wheel, the filename passes through
unchanged and bash complains trying to evaluate it as arithmetic.

e.g.:

> astral_test_pypa_gh_action-0.1.1650-py3-none-any.whl: syntax error:
invalid arithmetic operator (error token is ".1.1650-py3-none-any.whl")

Surprisingly, this does not fail the job — `sed -i
"s/0.1.0/0.1.$((patch_version + 1))/g` fails silently in its subshell,
leaving the version as 0.1.0, `test.pypi.org` returns 400 File already
exists, and the test succeeds because we use `skip-existing: true`.

.github/workflows/ci.yml

@@ -300,7 +300,7 @@ jobs:
           cd astral-test-pypa-gh-action
           ../uv init --package
           # Get the latest patch version
-          patch_version=$(curl https://test.pypi.org/simple/astral-test-pypa-gh-action/?format=application/vnd.pypi.simple.v1+json | jq --raw-output '.files[-1].filename' | sed 's/astral_test_pypa_gh_action-0\.1\.\([0-9]\+\)\.tar\.gz/\1/')
+          patch_version=$(curl https://test.pypi.org/simple/astral-test-pypa-gh-action/?format=application/vnd.pypi.simple.v1+json | jq --raw-output '[.files[].filename | select(endswith(".tar.gz"))] | last' | sed 's/astral_test_pypa_gh_action-0\.1\.\([0-9]\+\)\.tar\.gz/\1/')
           # Set the current version to one higher (which should be unused)
           sed -i "s/0.1.0/0.1.$((patch_version + 1))/g" pyproject.toml
           ../uv build