Prep for 2.21.3 release

Author: cowtowncoder

pom.xml

@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.fasterxml.jackson</groupId>
     <artifactId>jackson-base</artifactId>
-    <version>2.21.3-SNAPSHOT</version>
+    <version>2.21.3</version>
   </parent>
   <groupId>com.fasterxml.jackson.dataformat</groupId>
   <artifactId>jackson-dataformats-binary</artifactId>

release-notes/VERSION-2.x

@@ -14,7 +14,7 @@ Active maintainers:
 === Releases ===
 ------------------------------------------------------------------------
 
-2.21.3 (not yet released)
+2.21.3 (28-Apr-2026)
 
 #686: `CBORParser._finishLongTextAscii` returns negative length when `TextBuffer`
   segment > I/O buffer, leaving non-ASCII byte unconsumed