seal-v0.6.15

What's Changed

• [docs] Add frontmatter evaluation pipeline and GEO/AEO fields by @jessiemongeon1 in #635
• [chore] bump h2 to 0.4.18 (RUSTSEC-2026-0258) by @jonas-lj in #638
• [docs] Clarify that key server public keys are a trusted input for onchain decryption by @jonas-lj in #637
• [key-server] make grpc http2 error retriable by @joyqvq in #639
• [chore] update sui deps, release seal by @joyqvq in #640

Full Changelog: seal-v0.6.14...seal-v0.6.15