Bump versions for 8.1.2 release

.ci/bwcVersions

@@ -57,5 +57,6 @@ BWC_VERSION:
   - "8.1.0"
   - "8.1.1"
   - "8.1.2"
+  - "8.1.3"
   - "8.2.0"
   - "8.3.0"

.ci/snapshotBwcVersions

@@ -1,5 +1,5 @@
 BWC_VERSION:
   - "7.17.3"
-  - "8.1.2"
+  - "8.1.3"
   - "8.2.0"
   - "8.3.0"

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

@@ -105,6 +105,7 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_8_1_0 = new Version(8_01_00_99, org.apache.lucene.util.Version.LUCENE_9_0_0);
     public static final Version V_8_1_1 = new Version(8_01_01_99, org.apache.lucene.util.Version.LUCENE_9_0_0);
     public static final Version V_8_1_2 = new Version(8_01_02_99, org.apache.lucene.util.Version.LUCENE_9_0_0);
+    public static final Version V_8_1_3 = new Version(8_01_03_99, org.apache.lucene.util.Version.LUCENE_9_0_0);
     public static final Version V_8_2_0 = new Version(8_02_00_99, org.apache.lucene.util.Version.LUCENE_9_1_0);
     public static final Version V_8_3_0 = new Version(8_03_00_99, org.apache.lucene.util.Version.LUCENE_9_1_0);
     public static final Version CURRENT = V_8_3_0;