Fix plugin compilation (opensearch-project#1580)

* Changed gradle version and removed values iterator

Signed-off-by: Guian Gumpac <[email protected]>

* Update a test to match new indexResponse.aliases() type.

Signed-off-by: MaxKsyunz <[email protected]>

* Ran ./gradlew wrapper

Signed-off-by: Guian Gumpac <[email protected]>

---------

Signed-off-by: Guian Gumpac <[email protected]>
Signed-off-by: MaxKsyunz <[email protected]>
Co-authored-by: MaxKsyunz <[email protected]>
Signed-off-by: Yury-Fridlyand <[email protected]>

Author: Yury-Fridlyand

opensearch/src/main/java/org/opensearch/sql/opensearch/client/OpenSearchNodeClient.java

@@ -151,7 +151,7 @@ public List<String> indices() {
         .setLocal(true)
         .get();
     final Stream<String> aliasStream =
-        ImmutableList.copyOf(indexResponse.aliases().valuesIt()).stream()
+        ImmutableList.copyOf(indexResponse.aliases().values()).stream()
             .flatMap(Collection::stream).map(AliasMetadata::alias);
 
     return Stream.concat(Arrays.stream(indexResponse.getIndices()), aliasStream)

opensearch/src/test/java/org/opensearch/sql/opensearch/client/OpenSearchNodeClientTest.java

@@ -399,9 +399,7 @@ void cleanup_rethrows_exception() {
   @Test
   void get_indices() {
     AliasMetadata aliasMetadata = mock(AliasMetadata.class);
-    ImmutableOpenMap.Builder<String, List<AliasMetadata>> builder = ImmutableOpenMap.builder();
-    builder.fPut("index", Arrays.asList(aliasMetadata));
-    final ImmutableOpenMap<String, List<AliasMetadata>> openMap = builder.build();
+    final var openMap = Map.of("index", List.of(aliasMetadata));
     when(aliasMetadata.alias()).thenReturn("index_alias");
     when(nodeClient.admin().indices()
         .prepareGetIndex()