Prepare for 2.12.3 release

Author: cowtowncoder

pom.xml

@@ -10,7 +10,7 @@
   <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.core</groupId>

release-notes/VERSION-2.x

@@ -4,7 +4,7 @@ Project: jackson-databind
 === Releases === 
 ------------------------------------------------------------------------
 
-2.12.3 (not yet released)
+2.12.3 (12-Apr-2021)
 
 #3108: `TypeFactory` cannot convert `Collection` sub-type without type parameters
   to canonical form and back