[Backport 2.x] Update Gradle to 8.5

[opensearch-trigger-bot]

Backport a123c43 from #11136.

[github-actions]

Compatibility status:

Checks if related components are compatible with change 24864e5

Incompatible components

Skipped components

Compatible components

Compatible components: [https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/security-analytics.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/reporting.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/custom-codecs.git, https://github.com/opensearch-project/performance-analyzer.git, https://github.com/opensearch-project/common-utils.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/performance-analyzer-rca.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/sql.git]

[codecov]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (8aea3e5) 71.14% compared to head (24864e5) 70.77%.
Report is 4 commits behind head on 2.x.

Files	Patch %	Lines
.../src/main/java/org/opensearch/common/Booleans.java	76.19%	0 Missing and 5 partials ⚠️
.../opensearch/gradle/plugin/PluginBuildPlugin.groovy	0.00%	2 Missing ⚠️
...main/java/org/opensearch/gradle/PublishPlugin.java	0.00%	1 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff              @@
##                2.x   #11420      +/-   ##
============================================
- Coverage     71.14%   70.77%   -0.37%     
+ Complexity    59187    58785     -402     
============================================
  Files          4869     4869              
  Lines        278732   278706      -26     
  Branches      40848    40833      -15     
============================================
- Hits         198295   197266    -1029     
- Misses        63671    64701    +1030     
+ Partials      16766    16739      -27     

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[github-actions]

❕ Gradle check result for 24864e5: UNSTABLE

• TEST FAILURES:

      2 org.opensearch.index.shard.RemoteStoreRefreshListenerTests.classMethod
      1 org.opensearch.search.SearchWeightedRoutingIT.testMultiGetWithNetworkDisruption_FailOpenEnabled
      1 org.opensearch.index.shard.RemoteStoreRefreshListenerTests.testRefreshSuccessAfterFailureInFirstAttemptAfterSnapshotAndMetadataUpload

Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.