Bump versions after 8.6.2 release

Author: julio-santana

.ci/bwcVersions

@@ -84,5 +84,6 @@ BWC_VERSION:
   - "8.6.0"
   - "8.6.1"
   - "8.6.2"
+  - "8.6.3"
   - "8.7.0"
   - "8.8.0"

.ci/snapshotBwcVersions

@@ -1,5 +1,5 @@
 BWC_VERSION:
   - "7.17.10"
-  - "8.6.2"
+  - "8.6.3"
   - "8.7.0"
   - "8.8.0"

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

@@ -132,6 +132,7 @@ public class TransportVersion implements Comparable<TransportVersion> {
     public static final TransportVersion V_8_6_0 = new TransportVersion(8_06_00_99, "e209c5ed-3488-4415-b561-33492ca3b789");
     public static final TransportVersion V_8_6_1 = new TransportVersion(8_06_01_99, "9f113acb-1b21-4fda-bef9-2a3e669b5c7b");
     public static final TransportVersion V_8_6_2 = new TransportVersion(8_06_02_99, "5a82fb68-b265-4a06-97c5-53496f823f51");
+    public static final TransportVersion V_8_6_3 = new TransportVersion(8_06_03_99, "640b4f56-74a5-4d0e-bfb2-0a6395128d7f");
     public static final TransportVersion V_8_7_0 = new TransportVersion(8_07_00_99, "f1ee7a85-4fa6-43f5-8679-33e2b750448b");
     public static final TransportVersion V_8_8_0 = new TransportVersion(8_08_00_99, "f64fe576-0767-4ec3-984e-3e30b33b6c46");
     /*

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

@@ -135,6 +135,7 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_8_6_0 = new Version(8_06_00_99, TransportVersion.V_8_6_0, org.apache.lucene.util.Version.LUCENE_9_4_2);
     public static final Version V_8_6_1 = new Version(8_06_01_99, TransportVersion.V_8_6_1, org.apache.lucene.util.Version.LUCENE_9_4_2);
     public static final Version V_8_6_2 = new Version(8_06_02_99, TransportVersion.V_8_6_2, org.apache.lucene.util.Version.LUCENE_9_4_2);
+    public static final Version V_8_6_3 = new Version(8_06_03_99, TransportVersion.V_8_6_3, org.apache.lucene.util.Version.LUCENE_9_4_2);
     public static final Version V_8_7_0 = new Version(8_07_00_99, TransportVersion.V_8_7_0, org.apache.lucene.util.Version.LUCENE_9_5_0);
 
     public static final Version V_8_8_0 = new Version(8_08_00_99, TransportVersion.V_8_8_0, org.apache.lucene.util.Version.LUCENE_9_5_0);