v0.4.0

What's Changed

• fix(helm): wait until every RustFS pod accepts writes to the new bucket by @jakobmoellerdev in #43
• feat: /readyz + /livez, write-path 503, S3 create_bucket and ca_file by @jakobmoellerdev in #44
• refactor: cut ~17% of Rust LoC without behavior change by @jakobmoellerdev in #45
• storage: replace redb with LMDB (heed), lossless engine switching, engine benchmark by @jakobmoellerdev in #42
• storage: remove the rkyv metadata snapshot by @jakobmoellerdev in #46
• bench: survive a registry dying mid-phase; size the scale phase for CI by @jakobmoellerdev in #47
• docs: metadata engines guide (log vs lmdb, switching) by @jakobmoellerdev in #48
• release: v0.4.0 + publish Helm chart to GHCR as OCI artifact by @jakobmoellerdev in #49

Full Changelog: v0.3.0...v0.4.0