Incompatible with Ecto 3.5.5

Adding dependency `{timex_ecto: "~> 3.0.0"}` creates a dependency conflict:

```
Failed to use "ecto" (version 3.5.5) because
ecto_sql (version 3.5.3) requires ~> 3.5.0
phoenix_ecto (version 4.2.1) requires ~> 3.0
timex_ecto (versions 3.2.1 to 3.4.0) requires ~> 2.2
mix.lock specifies 3.5.5
```

Attempting to bypass this conflict with `{ecto: "~> 3.5.5", override: true}` generates the following error:

```
== Compilation error in file lib/types/date.ex ==
** (CompileError) lib/types/date.ex:58: Ecto.Date.__struct__/0 is undefined, cannot expand struct Ecto.Date. Make sure the struct name
is correct. If the struct name exists and is correct but it still cannot be found, you likely have cyclic module usage in your code
lib/types/date.ex:58: (module)
could not compile dependency :timex_ecto, "mix compile" failed. You can recompile this dependency with "mix deps.compile timex_ecto", update it with "mix deps.update timex_ecto" or clean it with "mix deps.clean timex_ecto"
```