Bugfix/nachimehta subscription history

[fivetran-joemarkiewicz]

Are you a current Fivetran customer?

Fivetran created PR built from the contributions of @nachimehta

What change(s) does this PR introduce?

This PR adds documentation that highlights the subscription_history change that was introduced within the Stripe Source PR.

Additionally, the main change within this PR will be the adjustment of the source package dependency.

Did you update the CHANGELOG?

• [X] Yes

Does this PR introduce a breaking change?

• [X] Yes (please provide breaking change details below.)
• [ ] No (please provide an explanation as to how the change is non-breaking below.)

Since the source PR will be a breaking change, this will also be breaking.

Did you update the dbt_project.yml files with the version upgrade (please leverage standard semantic versioning)? (In both your main project and integration_tests)

• [X] Yes

Is this PR in response to a previously created Bug or Feature Request

• [X] Yes, Issue/Feature dbt_stripe_source #37
• [ ] No

How did you test the PR changes?

• [X] CircleCi
• [X] Local (please provide additional testing details below)

Select which warehouse(s) were used to test the PR

• [X] BigQuery
• [X] Redshift
• [X] Snowflake
• [X] Postgres
• [ ] Databricks
• [ ] Other (provide details below)

Provide an emoji that best describes your current mood

💇‍♀️ **Feedback** We are so excited you decided to contribute to the Fivetran community dbt package! We continue to work to improve the packages and would greatly appreciate your [feedback](https://www.surveymonkey.com/r/DQ7K7WW) on our existing dbt packages or what you'd like to see next.

[fivetran-joemarkiewicz]

This can be tested using the following packages.yml config.

packages:
  - git: https://github.com/fivetran/dbt_stripe.git
    revision: bugfix/nachimehta-subscription-history
    warn-unpinned: false