Only refresh the CI cache monthly
Only refresh the CI cache monthly

We used to hash the BOM but it's really suboptimal with Dependabot
upgrading the BOM one dependency at a time.

We now only refresh the cache monthly. It should be good enough
to avoid exponential growth while using the cache much more often.

quarkusio/quarkus,quarkusio/quarkus,quarkusio/quarkus,quarkusio/quarkus,quarkusio/quarkus