chore(ci): 更新GitHub Actions分支名称

- 将触发分支从 master 更改为 main
-保持与当前默认分支名称一致- 确保CI流程正常运行

Author: coolxitech

.github/workflows/php-release.yml

@@ -3,10 +3,10 @@ name: 构建并发布 PHP 项目
 on:
   push:
     branches:
-      - master
+      - main
   pull_request:
     branches:
-      - master
+      - main
   workflow_dispatch: # 允许手动触发
 
 permissions: write-all