Move COSE-only changelog entries under rc2 (#7829)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: maxtropets <16566519+maxtropets@users.noreply.github.com>

Author: Copilot

CHANGELOG.md

@@ -9,6 +9,11 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 [7.0.0-rc2]: https://github.com/microsoft/CCF/releases/tag/ccf-7.0.0-rc2
 
+### Added
+
+- Added support for COSE-only ledger signatures. Networks can start in COSE-only mode or transition from dual signing (#7772).
+- Added `/receipt/cose` endpoint returning a COSE Sign1 receipt with Merkle proof for a given transaction. Returns 404 if no COSE receipt is available (e.g. for signature transactions) (#7772).
+
 ### Changed
 
 - `set_consensus_committed_function()` has moved from an endpoint-registration-time decorator (`Endpoint::set_consensus_committed_function()`) to a runtime call on the RPC context (`ctx.rpc_ctx->set_consensus_committed_function()`). This allows the same endpoint to conditionally block until committed based on query parameters, headers, or other per-request state. The endpoint-level method has been removed. See the logging sample app (`/log/private/optional_commit`) for example usage.
@@ -26,8 +31,6 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 
 ### Added
 
-- Added support for COSE-only ledger signatures. Networks can start in COSE-only mode or transition from dual signing (#7772).
-- Added `/receipt/cose` endpoint returning a COSE Sign1 receipt with Merkle proof for a given transaction. Returns 404 if no COSE receipt is available (e.g. for signature transactions) (#7772).
 - Added support for inline transaction receipt construction at commit time. Endpoint authors can use `build_receipt_for_committed_tx()` to construct a full `TxReceiptImpl` from the `CommittedTxInfo` passed to their `ConsensusCommittedEndpointFunction` callback. See the logging sample app (`/log/blocking/private/receipt`) for example usage (#7785).
 
 ### Changed