Added another weekday test

src/main.zig

@@ -365,3 +365,16 @@ test "get weekday" {
     };
     try testing.expectEqual(dt.weekday(), .tuesday);
 }
+
+test "get weekday 2" {
+    const dt = DateTime{
+        .year = Year.new(2023),
+        .month = .june,
+        .day = 10,
+        .hour = 6,
+        .minute = 21,
+        .second = 22,
+        .tz = .utc,
+    };
+    try testing.expectEqual(dt.weekday(), .saturday);
+}