chore: prepare release 0.21.1

Author: github-actions[bot]

.changeset/fix_edge_case_where_a_node_incorrectly_sends_the_genesis_state_to_peers_while_syncing.md

@@ -1,3 +1,14 @@
+## 0.21.1 (2026-02-25)
+
+### Fixes
+
+- Fix edge case where a node incorrectly sends the genesis state to peers while syncing.
+- Fix NDF in TestFormContractBasis
+- Fix parallelSync stalling when all workers fail.
+- Mark peer synced if there are no more blocks to sync.
+- Reduced excessive logging in syncer.
+- Validate RPCFundAccountsRequest
+
 ## 0.21.0 (2026-02-04)
 
 ### Breaking Changes

.changeset/fix_ndf_in_testformcontractbasis.md

@@ -1,4 +1,4 @@
-module go.sia.tech/coreutils // v0.21.0
+module go.sia.tech/coreutils // v0.21.1
 
 go 1.24.0