[Docs] Update Ad Reporting Info about Google Ads API and Deprecated AdWords API

[MitchellRLayton]

Is there an existing issue for this?

• I have searched the existing issues

Describe the issue

This section (https://github.com/fivetran/dbt_ad_reporting/tree/v0.7.0/#google-ads-and-adwords-api-configuration) needs updated to reflect the changes to Google's APIs.

Relevant error log or model output

N/A

Expected behavior

Google Ads API is the only API to worry about.

dbt Project configurations

N/A

Package versions

N/A

What database are you using dbt with?

other (mention it in "Additional Context")

dbt Version

N/A

Additional Context

https://fivetran.slack.com/archives/CAGK0BU0Z/p1653080137055409

Are you willing to open a PR to help address this issue?

• Yes.
• Yes, but I will need assistance and will schedule time during our office hours for guidance
• No.

[fivetran-joemarkiewicz]

The recent release of v0.8.0 of this package addresses this issue.