add sspecacct field to stg_netsuite2__accounts table

[jmongerlyra]

Please provide your name and company
Jared Monger, Lyra Health

Link the issue/feature request which this PR is meant to address
fivetran/dbt_netsuite#89

Detail what changes this PR introduces and how this addresses the issue/feature request linked above.
sspecacct is required in the source data in order to properly classify transactions recorded directly to CTA and Retained Earnings GL accounts. See related PR. fivetran/dbt_netsuite#90

How did you validate the changes introduced within this PR?
Lyra forked the repo and implemented/validated the changes against NetSuite reporting.

Which warehouse did you use to develop these changes?
Snowflake

Did you update the CHANGELOG?

• Yes

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)

• Yes

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Feedback

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[fivetran-joemarkiewicz]

@jmongerlyra this update looks good to me and will be valuable to use in your transforms PR. While I am holding off on merging your transform PR until we have time to review it, I don't see an issue with incorporating this updating into our upcoming release.

I will merge this into my working branch and this should be available by default in the upcoming netsuite_source release.