更新 release.yml，修改获取最后正常提交的逻辑，使用 git diff 命令替代 git rev-list，提升了发布日志生成的准确性和代码的可读性。

Author: Flames1217

.github/workflows/release.yml

@@ -41,7 +41,7 @@ jobs:
         id: diff
         run: |
           git log -1 --pretty=format:"%s%n%n%b" > commit_msg.txt
-          LAST_NORMAL_COMMIT=$(git rev-list --no-merges -n 1 HEAD)
+          LAST_NORMAL_COMMIT=$(git diff HEAD^ HEAD)
           git show --pretty="" $LAST_NORMAL_COMMIT > diff.txt
 
       - name: Generate AI Release Notes