release: update poms to version 20.12

[git-p4: depot-paths = "//dev/coherence-ce/release/coherence-ce-v20.12/": change = 83697]

Author: harveyraja

prj/coherence-bom/pom.xml

@@ -88,7 +88,7 @@
   </developers>
 
   <properties>
-    <revision>20.12-SNAPSHOT</revision>
+    <revision>20.12</revision>
     <coherence.group.id>com.oracle.coherence.ce</coherence.group.id>
 
     <maven.deploy.plugin.version>2.8.2</maven.deploy.plugin.version>

prj/pom.xml

@@ -786,7 +786,7 @@
       Note that this property has to be named 'revision' and that it has
       special meaning for Maven (see http://maven.apache.org/maven-ci-friendly.html)
       -->
-    <revision>20.12-SNAPSHOT</revision>
+    <revision>20.12</revision>
 
     <!-- version prefix used for cluster compatibility -->
     <project.version.prefix>14.1.1</project.version.prefix>