Migration for assignment.lti_v13_resource_link_id

[marcospri]

For:

• SPIKE: Start fetching course rosters using LTIA API #6185

Auto Generated from: #6615

More context and testing instructions over: #6616

Testing migration

tox -e dev --run-command 'alembic upgrade head'
dev run-test-pre: PYTHONHASHSEED='1135265335'
dev run-test-pre: commands[0] | pip-sync-faster requirements/dev.txt --pip-args --disable-pip-version-check
dev run-test: commands[0] | alembic upgrade head
INFO  [alembic.runtime.migration] Context impl PostgresqlImpl.
INFO  [alembic.runtime.migration] Will assume transactional DDL.
INFO  [alembic.runtime.migration] Running upgrade 9e79650bed37 -> 481968561169, Assignment v13 ID.