make main output writer an ArrayListUnmanaged writer

Author: kristoff-it

src/errors.zig

@@ -3,7 +3,7 @@ const builtin = @import("builtin");
 const html = @import("html.zig");
 const Span = @import("root.zig").Span;
 
-pub const ErrWriter = std.ArrayList(u8).Writer;
+pub const ErrWriter = std.ArrayListUnmanaged(u8).Writer;
 
 /// Used to catch programming errors where a function fails to report
 /// correctly that an error has occurred.

src/vm.zig

@@ -49,7 +49,7 @@ pub fn VM(
         }) = .{},
 
         const ScriptyVM = scripty.VM(Context, Value);
-        const OutWriter = std.io.BufferedWriter(4096, std.fs.File.Writer).Writer;
+        const OutWriter = std.ArrayListUnmanaged(u8).Writer;
         const ErrWriter = errors.ErrWriter;
         const Self = @This();