Add 7.1.2 version constant. (#42643)

Relates to #42635

server/src/main/java/org/elasticsearch/Version.java

@@ -74,6 +74,8 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_7_1_0 = new Version(V_7_1_0_ID, org.apache.lucene.util.Version.LUCENE_8_0_0);
     public static final int V_7_1_1_ID = 7010199;
     public static final Version V_7_1_1 = new Version(V_7_1_1_ID, org.apache.lucene.util.Version.LUCENE_8_0_0);
+    public static final int V_7_1_2_ID = 7010299;
+    public static final Version V_7_1_2 = new Version(V_7_1_2_ID, org.apache.lucene.util.Version.LUCENE_8_0_0);
     public static final int V_7_2_0_ID = 7020099;
     public static final Version V_7_2_0 = new Version(V_7_2_0_ID, org.apache.lucene.util.Version.LUCENE_8_0_0);
     public static final int V_7_3_0_ID = 7030099;
@@ -100,6 +102,8 @@ public class Version implements Comparable<Version>, ToXContentFragment {
                 return V_7_3_0;
             case V_7_2_0_ID:
                 return V_7_2_0;
+            case V_7_1_2_ID:
+                return V_7_1_2;
             case V_7_1_1_ID:
                 return V_7_1_1;
             case V_7_1_0_ID: