With the release of MetricFlow 0.206.0 we can update dbt-metricflow
to reflect that dependency change and deploy the new version.

Note our build reshuffling incidentally renamed the extras to full
package names, so `pip install dbt-metricflow[postgres]` must now be
`pip install dbt-metricflow[dbt-postgres]`, which, while more typing,
does seem like an improvement since it's more obvious which package
the extra command actually installs.

To test the build, I ran the following from repo root:

```
$ cd dbt-metricflow
$ hatch build
```

From there, I created a clean venv and ran variations on pip install
commands from the local builds and fired up the MetricFlow CLI. For
example:

```
$ python -m pip install "$HOME/sources/metricflow/dbt-metricflow/dist/dbt_metricflow-0.7.0-py3-none-any.whl[dbt-postgres]"
...
$ mf --version
mf, version 0.7.0
$ mf query --metrics order_cost --group-by metric_time --order metric_time --where "{{ TimeDimension('metric_time', 'day') }} > '2017-01-01'" --limit 5
✔ Success - query completed after 0.31 seconds
metric_time__day       order_cost
-------------------  ------------
2017-01-02T00:00:00        285.24
2017-01-03T00:00:00        328.94
2017-01-04T00:00:00        294.73
2017-01-05T00:00:00        340.78
2017-01-06T00:00:00        329.86
```