core: migrate all sessions to the database #27799

Job	Run time
lint (bandit)	1m 58s
lint (black)	1m 48s
lint (codespell)	1m 47s
lint (pending-migrations)	1m 42s
test-migrations	2m 32s
lint (ruff)	1m 45s
test-migrations-from-stable - PostgreSQL 15-alpine	25m 20s
test-migrations-from-stable - PostgreSQL 16-alpine	24m 42s
test-integration	6m 27s
test-e2e (proxy)	22m 4s
test-unittest - PostgreSQL 15-alpine	20m 28s
test-unittest - PostgreSQL 16-alpine	21m 29s
test-e2e (oauth)	30m 15s
test-e2e (oauth-oidc)	17m 4s
test-e2e (saml)	29m 34s
test-e2e (ldap)	9m 59s
test-e2e (radius)	6m 6s
test-e2e (scim)	5m 21s
test-e2e (flows)	17m 25s
ci-core-mark	2s
build	0s
pr-comment	0s
	4h 7m 48s

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