chore: Bump Gradle wrapper to 9.4.1 and exclude @ignore classes

Bump Gradle wrapper from 9.2.0 to 9.4.1 to satisfy the minimum version
required by opensearch-build-tools 3.7.0-SNAPSHOT (GlobalBuildInfoPlugin).

Exclude 24 @Ignore-annotated test classes from integTest at the Gradle
layer to work around a Gradle 9.4.1+ bug where
TestEventReporterAsListener crashes with ClassCastException when
encountering class-level @ignore annotations. These classes were already
skipped by JUnit; this moves the skip earlier to avoid the buggy bridge.
Not fixed as of Gradle 9.5.0.

Refs: opensearch-project/OpenSearch#21153, #5406
Signed-off-by: Chen Dai <daichen@amazon.com>

Author: dai-chen

gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=16f2b95838c1ddcf7242b1c39e7bbbb43c842f1f1a1a0dc4959b6d4d68abcac3
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.2.0-all.zip
+distributionSha256Sum=708d2c6ecc97ca9a11838ef64a6c2301151b8dd10387e22dc1a12c30557cab5b
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.4.1-all.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME

integ-test/build.gradle

@@ -546,6 +546,35 @@ integTest {
     // Exclude this IT, because they executed in another task (:integTestWithSecurity)
     exclude 'org/opensearch/sql/security/**'
 
+    // Workaround for Gradle 9.4.1 bug: TestEventReporterAsListener crashes with ClassCastException
+    // when encountering class-level @Ignore annotations. These classes were already skipped by JUnit;
+    // this moves the skip to the Gradle layer to avoid the buggy bridge.
+    // Remove once Gradle ships a fix (not fixed as of 9.5.0).
+    exclude 'org/opensearch/sql/calcite/remote/CalciteInformationSchemaCommandIT.class'
+    exclude 'org/opensearch/sql/calcite/remote/CalciteJsonFunctionsIT.class'
+    exclude 'org/opensearch/sql/calcite/remote/CalcitePrometheusDataSourceCommandsIT.class'
+    exclude 'org/opensearch/sql/calcite/remote/CalciteShowDataSourcesCommandIT.class'
+    exclude 'org/opensearch/sql/legacy/AggregationIT.class'
+    exclude 'org/opensearch/sql/legacy/DateFormatIT.class'
+    exclude 'org/opensearch/sql/legacy/DateFunctionsIT.class'
+    exclude 'org/opensearch/sql/legacy/HashJoinIT.class'
+    exclude 'org/opensearch/sql/legacy/HavingIT.class'
+    exclude 'org/opensearch/sql/legacy/JoinIT.class'
+    exclude 'org/opensearch/sql/legacy/JSONRequestIT.class'
+    exclude 'org/opensearch/sql/legacy/MathFunctionsIT.class'
+    exclude 'org/opensearch/sql/legacy/MetricsIT.class'
+    exclude 'org/opensearch/sql/legacy/MultiQueryIT.class'
+    exclude 'org/opensearch/sql/legacy/NestedFieldQueryIT.class'
+    exclude 'org/opensearch/sql/legacy/PreparedStatementIT.class'
+    exclude 'org/opensearch/sql/legacy/QueryFunctionsIT.class'
+    exclude 'org/opensearch/sql/legacy/QueryIT.class'
+    exclude 'org/opensearch/sql/legacy/ShowIT.class'
+    exclude 'org/opensearch/sql/legacy/SourceFieldIT.class'
+    exclude 'org/opensearch/sql/legacy/SQLFunctionsIT.class'
+    exclude 'org/opensearch/sql/legacy/SubqueryIT.class'
+    exclude 'org/opensearch/sql/ppl/JsonFunctionsIT.class'
+    exclude 'org/opensearch/sql/sql/ExpressionIT.class'
+
     finalizedBy 'printIntegTestPaths'
 }