Fix JSONBindingSpec

Two lines in block `where:` was disabled since they falling.
Thats happens because expected date
```
new DateTime(2014, 4, 23, 4, 30, 45, 123).withZone(UTC)
```
Is shifted to timezone, i.e. instead of `2014-4-23 4:30` we get `2014-4-22 21:30` since default timezone is Vancouver -7

Actually, in next lines new expected dates was already shifted.

This is simple fix