Signed-off-by: Rupal Mahajan maharup@amazon.com

Description

• Changed mockito-core version to 5.1.0 to resolve conflicts

 > Conflict(s) found for the following module(s):
14 actionable tasks: 14 executed
          - org.mockito:mockito-core between versions 5.1.0 and 4.7.0
        Run with:
            --scan or
            :dependencyInsight --configuration testCompileClasspath --dependency org.mockito:mockito-core

• Removed guava from dependencies to resolve

Caused by: java.lang.IllegalStateException: jar hell!
class: com.google.common.annotations.Beta
jar1: /tmp/tmpincskegu/opensearch-3.0.0/plugins/.installing-14976970994818525932/guava-31.0.1-jre.jar
jar2: /tmp/tmpincskegu/opensearch-3.0.0/plugins/opensearch-job-scheduler/guava-31.0.1-jre.jar
	at org.opensearch.bootstrap.JarHell.checkClass(JarHell.java:316)

Issues Resolved

#637

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

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