Update dependency SQLAlchemy to v2

[renovate]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
SQLAlchemy (changelog)	>=1.4.17,<=1.4.41 -> >=2.0.27,<=2.0.27

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[renovate]

⚠ Artifact update problem

Renovate failed to update an artifact related to this branch. You probably do not want to merge this PR as-is.

♻ Renovate will retry this branch, including artifacts, only when one of the following happens:

• any of the package files in this branch needs updating, or
• the branch becomes conflicted, or
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The artifact failure details are included below:

File name: poetry.lock

Updating dependencies
Resolving dependencies...

Creating virtualenv application-portal in /tmp/renovate/repos/github/WaffleHacks/application-portal/.venv

Because sqlalchemy (2.0.27) depends on sqlalchemy (2.0.27)
 and sqlmodel (0.0.8) depends on SQLAlchemy (>=1.4.17,<=1.4.41), sqlalchemy (2.0.27) is incompatible with sqlmodel (0.0.8).
And because no versions of sqlmodel match >0.0.8,<0.0.9, sqlalchemy (2.0.27) is incompatible with sqlmodel (>=0.0.8,<0.0.9).
So, because application-portal depends on both SQLAlchemy (>=2.0.27,<=2.0.27) and sqlmodel (^0.0.8), version solving failed.