Update dbt-core dependency

[jlarue26]

The adapter currently depends on dbt-core 1.0.6. Update dependency to be dbt-core 1.2.0/1.2.1.

Testing to occur under subsequent issue.

Related: fabrice-etanchaud/dbt-dremio#34

[jlarue26]

Resolution:
Updated dbt-dremio to require dbt-core 1.2.x (right now 1.2.0 and 1.2.1 but will work with any 1.2.x).

Verification that the dependencies were updated:

In a terminal, run the following:

• pip uninstall dbt-dremio
• pip uninstall dbt-core
• cd to directly where dbt-dremio/setup.py is located.
• Run python ./setup.py install
• Search for “dbt-core” in the output. Verify you see the following:

Processing dbt_core-1.2.1-py3-none-any.whl
Installing dbt_core-1.2.1-py3-none-any.whl…

[jlarue26]

dbt-core dependency was rolled back to 1.2.2 due to an error with dbt init not creating the profiles.yml file.
A new issue to updated to dbt-core 1.3 has been created.
Issue can be closed.