## What
We had a bug where during incremental syncs Hubspot CRM Search streams
were not including the custom properties in the json body of the POST
request so they were not getting received and emitted with records.
## How
The bug was in the CDK and it was fixed in version `7.3.7` in this
https://github.com/airbytehq/airbyte-python-cdk/pull/797
We need to bump the version of SDM to get the fix, but in addition, we
need to upgrade the unit_test `pyproject.toml` which is still on v6.
I've also added a new test that validates that properties are indeed
populated in the outbound request. And with the bump from v6 to v7 I
fixed the tests which have now changed.
**Note**: It does feel like we have something of a gap where our unit
tests don't properly test CDK changes since the two are independently
versioned... This is something we may want to investigate and solve so
these types of things don't happen again
## Can this PR be safely reverted and rolled back?
- [ ] YES 💚
- [ ] NO ❌
Kind of... If we do this wrong then we have to reset customers back to
their previous state, but this is no different than the state we were
previously in
