title: Add `candidates_pending_availability` Runtime API

doc:
  - audience: "Node Dev"
    description: |
     This new API retrieves all `CommittedCandidateReceipts` of all candidates pending availability
     for a parachain at a given relay chain block number. It is required by collators that make use
     of elastic scaling capability in the context of PoV recovery and block import. The old API 
     `candidate_pending_availability` is now deprectated and will be removed in the future.

crates:
  - name: polkadot-node-core-runtime-api
    bump: minor
  - name: polkadot-node-subsystem-types
    bump: minor
  - name: polkadot-node-subsystem-util
    bump: minor
  - name: polkadot-primitives
    bump: minor
  - name: polkadot-runtime-parachains
    bump: minor
  - name: cumulus-relay-chain-rpc-interface
    bump: minor
  - name: cumulus-relay-chain-minimal-node
    bump: minor