Prepare for 2.12.3 release

Author: cowtowncoder

pom.xml

@@ -3,7 +3,7 @@
   <parent>
     <groupId>com.fasterxml.jackson</groupId>
     <artifactId>jackson-base</artifactId>
-    <version>2.12.3-SNAPSHOT</version>
+    <version>2.12.3</version>
   </parent>
   <groupId>com.fasterxml.jackson.dataformat</groupId>
   <artifactId>jackson-dataformats-binary</artifactId>

release-notes/VERSION-2.x

@@ -10,7 +10,7 @@ Modules:
 === Releases ===
 ------------------------------------------------------------------------
 
-2.12.3 (not yet released)
+2.12.3 (12-Apr-2021)
 
 #257: (smile) Uncaught validation problem wrt Smile "BigDecimal" type
  (reported by Fabian M)