Merge pull request #419 from SiaFoundation/release

chore: prepare release 0.21.3

Author: n8mgr

.changeset/fix_a_bug_where_a_changed_host_wallet_address_leads_to_failed_renewals.md

@@ -1,3 +1,10 @@
+## 0.21.3 (2026-04-21)
+
+### Fixes
+
+- Fix a bug where a changed host wallet address leads to failed renewals.
+- Update webtransport-go to `05fe5253a73c`
+
 ## 0.21.2 (2026-04-10)
 
 ### Features

.changeset/update_webtransport_go_to_05fe5253a73c.md

@@ -1,4 +1,4 @@
-module go.sia.tech/coreutils // v0.21.2
+module go.sia.tech/coreutils // v0.21.3
 
 go 1.26.0