refactor: Simplify Python script in publish workflow

This commit refactors the Python script used in the `publish-crate.yml`
GitHub Actions workflow. Previously, a multi-line Python script embedded
as a heredoc was used to parse the `cargo metadata` output and extract
the crate's version. This has been replaced with a more concise single-
line Python command executed using `python3 -c`. The change improves
readability and reduces verbosity within the workflow definition file
without altering the core functionality of version extraction and tag
validation.

Influence:
1. Verify the `publish-crate.yml` workflow still correctly extracts the
crate version.
2. Ensure the tag validation step (`Tag ${tag} does not match crate
version v${version}`) continues to function as expected.
3. Observe successful execution of the `check-tag` job in the CI
pipeline for a new tag creation.

refactor: 简化发布工作流中的 Python 脚本

此提交重构了 `publish-crate.yml` GitHub Actions 工作流中使用的 Python
脚本。之前，使用多行 Python 脚本（通过 heredoc 嵌入）来解析 `cargo
metadata` 输出并提取 crate 的版本。现在已将其替换为使用 `python3 -c` 执
行的更简洁的单行 Python 命令。此更改提高了工作流定义文件的可读性并减少了
冗余，同时不改变版本提取和标签验证的核心功能。

Influence:
1. 验证 `publish-crate.yml` 工作流仍能正确提取 crate 版本。
2. 确保标签验证步骤（`Tag ${tag} does not match crate version
v${version}`）继续按预期工作。
3. 观察 CI 管道中为新标签创建时 `check-tag` 作业的成功执行。

Author: zccrs

.github/workflows/publish-crate.yml

@@ -27,12 +27,7 @@ jobs:
         run: |
           tag="${GITHUB_REF#refs/tags/}"
           version=$(cargo metadata --no-deps --format-version 1 |
-            python3 - <<'PY'
-            import json,sys
-            meta=json.load(sys.stdin)
-            print(meta['packages'][0]['version'])
-            PY
-          )
+            python3 -c "import sys,json; print(json.load(sys.stdin)['packages'][0]['version'])")
           if [ "${tag}" != "v${version}" ]; then
             echo "Tag ${tag} does not match crate version v${version}" >&2
             exit 1