Merge branch '2.22' into 2.x

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: cowtowncoder

release-notes/VERSION-2.x

@@ -203,7 +203,7 @@ No changes since 2.19.1
 #571: Unable to deserialize a pojo with IonStruct
  (reported, fix contributed by Josh C)
 
-2.18.10 (not yet released)
+2.18.10 (15-Aug-2026)
 
 #725: (cbor) Ensure `maxNameLength` limit enforced for CBOR parser [CVE-2026-68495]
  (reported by @tinyb0y)