chore(ci): Fix circular dependency in dynamodb-local and maven packaging phases

[phipag]

Summary

This PR address a small issue where a circular dependency in Maven phases caused build issues for the idempotency utility when attempting to start dynamodb-local before unit tests on an initial mvn -B test command.

The issue is:

• Maven tries to copy all artifacts to ${project.build.directory}/dynamodb-local before running unit tests.
• However, at this time the production dependencies are not yet built (powertools-idempotency-core)
• Maven cannot copy the artifacts of non-built powertools-idempotency-core and fails

Solution:

• powertools-idempotency-core is not needed for DynamoDB local which is treated as an external process. Removing it solves the circular dependency.

Example failure: https://github.com/aws-powertools/powertools-lambda-java/actions/runs/17577454233/job/49925991193

Changes

Issue number: #2128

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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