fix(upload): 允许上传PEM证书文件

src/Controller/FileController.php

@@ -53,7 +53,7 @@ class FileController
         $file = $request->file('file');
         validate([
             'category_id' => 'egt:0',
-            'file' => 'require|fileSize:' . (1024 * 1024 * 100) . '|fileExt:png,jpg,jpeg,gif,mp4|fileMime:image/png,image/jpg,image/jpeg,image/gif,video/mp4',
+            'file' => 'require|fileSize:' . (1024 * 1024 * 100) . '|fileExt:png,jpg,jpeg,gif,mp4,pem|fileMime:image/png,image/jpg,image/jpeg,image/gif,video/mp4,application/x-pem-file,application/x-x509-ca-cert,application/x-x509-user-cert,application/pkix-cert,application/octet-stream,text/plain',
         ], [
             'category_id.egt' => '分类ID不能小于0',
             'file.require' => '请选择文件',