Update to latest zig

Author: joachimschmidt557

src/bitap.zig

@@ -19,8 +19,8 @@ pub fn bitap(
     assert(@typeInfo(ElemType) == .Int);
     assert(pattern.len <= max_pattern_length);
 
-    const Int = std.meta.Int(false, max_pattern_length + 1);
-    const Log2Int = std.meta.Int(false, std.math.log2(max_pattern_length + 1));
+    const Int = std.meta.Int(.unsigned, max_pattern_length + 1);
+    const Log2Int = std.meta.Int(.unsigned, std.math.log2(max_pattern_length + 1));
     const possible_values = possibleValues(ElemType);
 
     if (pattern.len == 0) return 0;