zlib/minizip: Update to version 1.2.13, remove zlib from freetype

Security update, fixes CVE-2022-37434 in zlib.

Only applications exposing/using `inflateGetHeader()` seem to be affected,
which is not our case, so this is not critical for Godot.

Remove duplicated copy of zlib in freetype sources to force using the updated
version in `thirdparty/zlib/`.

Co-authored-by: Rémi Verschelde <rverschelde@gmail.com>

thirdparty/zlib/gzlib.c

@@ -30,7 +30,7 @@ local gzFile gz_open OF((const void *, int, const char *));
 
    The gz_strwinerror function does not change the current setting of
    GetLastError. */
-char ZLIB_INTERNAL *gz_strwinerror (error)
+char ZLIB_INTERNAL *gz_strwinerror(error)
      DWORD error;
 {
     static char buf[1024];