Update mssql driver

[sapk]

The mssql driver was blocked to an old version from 2016 because of a replace rule.

Changelog: denisenkom/go-mssqldb@e32ca50...master

[lafriks]

Migrations does not seem to work anymore

[techknowlogick]

Looking at some of the logs it seems that during migration tests an earlier migration didn’t empty as there are errors about duplicate table:

Error: mssql: There is already an object named 'access_token' in the database.

[zeripath]

Looks like dropping the database between the migration tests didn't work

[zeripath]

They should be being dropped by:

gitea/integrations/migration-test/migration_test.go

Line 199 in 7dd9837

_, err = db.Exec("DROP DATABASE IF EXISTS gitea")

But this doesn't seem to be happening and it doesn't seem to be complaining about it

[zeripath]

Has some auto transaction support been added? It might be that it's expecting us to commit before it moving on?

[sapk]

I forget that I have done this PR before 🤦‍♂️.
This is now superseded by #7306 and futur work in #7294 to completely remove the replace in go.mod.