test: rails7: add activerecord-sqlserver-adapter 7.0.0.0.rc1
test: rails7: add activerecord-sqlserver-adapter 7.0.0.0.rc1

It's still an RC, but it looks like it does the job for arelx.

Faveod/arel-extensions,Faveod/arel-extensions,Faveod/arel-extensions