Context

We are only building the toolchain on RHEL 7.9, not RHEL 7.6. We need to update to target that host.

Example failure: https://spruce.mongodb.com/task/motor_test_rhel7__ssl~ssl_tox_env_rhel7~test_os~rhel76_test_latest_sharded_cluster_66493d822027250007b7aa6b_24_05_18_23_45_06/tests?execution=0&sortBy=STATUS&sortDir=ASC

Definition of done

Update config.yml to point to RHEL 7.9.

Pitfalls

N/A