Merge branch 'master' into ao-chain-api-header-message

* master:
  NetworkBridge: validator (authorities) discovery api (#1699)
  Registrar v1 follow-ups (#1786)
  Make collation an optional return (#1787)
  XCM: Land xcm-handler and xcm-executor (#1771)
  v0.8.25 (#1785)
  add two node local net script (#1781)
  Adjust max nominators down to 128 (from 256) (#1782)
  Companion for substrate/pull/7215 (#1768)
  Remove Stale Upgrades (#1780)
  Update Polkadot Weights for Substrate 2.0 (#1761)