Update to 7-Zip Version 21.03

CPP/7zip/Archive/Zip/ZipHeader.h

@@ -89,6 +89,7 @@ namespace NFileHeader
       kZip64 = 0x01,
       kNTFS = 0x0A,
       kStrongEncrypt = 0x17,
+      kIzNtSecurityDescriptor = 0x4453,
       kUnixTime = 0x5455,
       kUnixExtra = 0x5855,
       kIzUnicodeComment = 0x6375,

CPP/7zip/Archive/Zip/ZipItem.cpp

@@ -37,6 +37,7 @@ static const CUInt32PCharPair g_ExtraTypes[] =
   { NExtraID::kUnix3Extra, "ux" },
   { NExtraID::kIzUnicodeComment, "uc" },
   { NExtraID::kIzUnicodeName, "up" },
+  { NExtraID::kIzNtSecurityDescriptor, "SD" },
   { NExtraID::kWzAES, "WzAES" },
   { NExtraID::kApkAlign, "ApkAlign" }
 };