We can use a [GHA cron job](https://docs.github.com/en/actions/writing-workflows/choosing-when-your-workflow-runs/events-that-trigger-workflows#schedule) to [delete the cache](https://docs.github.com/en/actions/writing-workflows/choosing-what-your-workflow-does/caching-dependencies-to-speed-up-workflows#force-deleting-cache-entries) every few weeks automatically. _Originally posted by @real-or-random in https://github.com/bitcoin-core/secp256k1/issues/1690#issuecomment-2990002076_