Heimdall v0.9.0-beta Hits Amoy, Zurich HF Set

Heimdall v0.9.0-beta released for Polygon Amoy. Zurich HF set for block 37,750,000 on Wed June 17th, ~2PM UTC. Includes improvements, new features, fixes. Node operators must upgrade immediately. Requires config changes and specific Bor versions. Upgrade steps: stop heimdalld, install via heimdall-v2.sh with v0.9.0-beta, amoy, node type. Verify version, restart service.