Add 7.17.6 to versions

Author: pugnascotia

.ci/bwcVersions

@@ -54,6 +54,7 @@ BWC_VERSION:
   - "7.17.3"
   - "7.17.4"
   - "7.17.5"
+  - "7.17.6"
   - "8.0.0"
   - "8.0.1"
   - "8.1.0"

.ci/snapshotBwcVersions

@@ -1,3 +1,3 @@
 BWC_VERSION:
-  - "7.17.5"
+  - "7.17.6"
   - "8.3.1"

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

@@ -102,6 +102,7 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_7_17_3 = new Version(7_17_03_99, org.apache.lucene.util.Version.LUCENE_8_11_1);
     public static final Version V_7_17_4 = new Version(7_17_04_99, org.apache.lucene.util.Version.LUCENE_8_11_1);
     public static final Version V_7_17_5 = new Version(7_17_05_99, org.apache.lucene.util.Version.LUCENE_8_11_1);
+    public static final Version V_7_17_6 = new Version(7_17_06_99, org.apache.lucene.util.Version.LUCENE_8_11_1);
     public static final Version V_8_0_0 = new Version(8_00_00_99, org.apache.lucene.util.Version.LUCENE_9_0_0);
     public static final Version V_8_0_1 = new Version(8_00_01_99, org.apache.lucene.util.Version.LUCENE_9_0_0);
     public static final Version V_8_1_0 = new Version(8_01_00_99, org.apache.lucene.util.Version.LUCENE_9_0_0);