enable BWC tests after lucene upgrade (#55247) (#55254)

Author: iverase

build.gradle

@@ -194,8 +194,8 @@ task verifyVersions {
  * after the backport of the backcompat code is complete.
  */
 
-boolean bwc_tests_enabled = false
-final String bwc_tests_disabled_issue = "https://github.com/elastic/elasticsearch/pull/55236" /* place a PR link here when committing bwc changes */
+boolean bwc_tests_enabled = true
+final String bwc_tests_disabled_issue = "" /* place a PR link here when committing bwc changes */
 if (bwc_tests_enabled == false) {
   if (bwc_tests_disabled_issue.isEmpty()) {
     throw new GradleException("bwc_tests_disabled_issue must be set when bwc_tests_enabled == false")

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

@@ -133,7 +133,7 @@ public class Version implements Comparable<Version>, ToXContentFragment {
     public static final Version V_7_6_1 = new Version(7060199, org.apache.lucene.util.Version.LUCENE_8_4_0);
     public static final Version V_7_6_2 = new Version(7060299, org.apache.lucene.util.Version.LUCENE_8_4_0);
     public static final Version V_7_6_3 = new Version(7060399, org.apache.lucene.util.Version.LUCENE_8_4_0);
-    public static final Version V_7_7_0 = new Version(7070099, org.apache.lucene.util.Version.LUCENE_8_5_0);
+    public static final Version V_7_7_0 = new Version(7070099, org.apache.lucene.util.Version.LUCENE_8_5_1);
     public static final Version V_7_8_0 = new Version(7080099, org.apache.lucene.util.Version.LUCENE_8_5_1);
     public static final Version CURRENT = V_7_8_0;