Add sqlalchemy session close after queries

[MichaelLukowski]

Bug Fixes

In certain circumstances there could be too many sqlalchemy sessions open at the same time and would cause the service to crash. Adding session.close after db queries return to remedy.

[github-actions]

The style in this PR agrees with black. ✔️

This formatting comment was generated automatically by a script in uc-cdis/wool.

[github-actions]

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Please find the detailed integration test report here

Please find the ci env pod logs here

[github-actions]

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Please find the detailed integration test report here

Please find the ci env pod logs here

[coveralls]

Pull Request Test Coverage Report for Build 10148009197

Details

• 0 of 0 changed or added relevant lines in 0 files are covered.
• 11 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+0.1%) to 84.711%

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Files with Coverage Reduction	New Missed Lines	%
blueprints/external_oidc.py	1	88.14%
tokens.py	10	78.18%

Totals
Change from base Build 10147024628:	0.1%
Covered Lines:	410
Relevant Lines:	484

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💛 - Coveralls

[github-actions]

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Please find the detailed integration test report here

Please find the ci env pod logs here