fix breaking change for zig 0.15.0-dev.375+8f8f37fb0

Author: e0328eric

src/lib.zig

@@ -614,7 +614,7 @@ pub const Lua = opaque {
             return null;
         } else {
             // ptr is null, allocate a new block of memory
-            const new_ptr = allocator_ptr.alignedAlloc(u8, alignment, nsize) catch return null;
+            const new_ptr = allocator_ptr.alignedAlloc(u8, .fromByteUnits(alignment), nsize) catch return null;
             return new_ptr.ptr;
         }
     }