[Java] Remove AWS SDK v1 STS dependency from multilang-schema-registry

[jvdadda]

Issue #, if available: #500

Description of changes:

Remove the com.amazonaws:aws-java-sdk-sts (AWS SDK v1) dependency from the multilang-schema-registry module. The v2 equivalent software.amazon.awssdk:sts is already declared and no v1 STS classes are used in source code.

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[Copilot]

Pull request overview

Removes the AWS Java SDK v1 STS dependency (com.amazonaws:aws-java-sdk-sts) to support the repo-wide SDK v1 removal effort (#500), relying on the AWS SDK v2 STS artifact (software.amazon.awssdk:sts) instead.

Changes:

• Remove aws-java-sdk-sts dependency from multilang-schema-registry.
• Remove aws-java-sdk-sts dependency from serializer-deserializer.
• Update Javadoc/test comments to reference AwsCredentialsProvider (v2) instead of AWSCredentialsProvider (v1).

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
serializer-deserializer/src/test/java/com/amazonaws/services/schemaregistry/deserializers/avro/AWSKafkaAvroDeserializerTest.java	Updates test comment to reference v2 credentials provider naming.
serializer-deserializer/src/test/java/com/amazonaws/services/schemaregistry/deserializers/GlueSchemaRegistryKafkaDeserializerTest.java	Updates test comment to reference v2 credentials provider naming.
serializer-deserializer/src/main/java/com/amazonaws/services/schemaregistry/deserializers/avro/AWSKafkaAvroDeserializer.java	Updates constructor Javadoc to reference v2 credentials provider naming.
serializer-deserializer/src/main/java/com/amazonaws/services/schemaregistry/deserializers/GlueSchemaRegistryKafkaDeserializer.java	Updates constructor Javadoc to reference v2 credentials provider naming.
serializer-deserializer/pom.xml	Drops AWS SDK v1 STS dependency.
multilang-schema-registry/pom.xml	Drops AWS SDK v1 STS dependency.

Comments suppressed due to low confidence (1)

serializer-deserializer/pom.xml:66

• PR metadata says this change is scoped to removing the AWS SDK v1 STS dependency from multilang-schema-registry and that it depends on #503, but this PR also removes aws-java-sdk-sts from serializer-deserializer (and updates related Javadoc/tests). Please align the PR title/description (or drop the serializer-deserializer changes) so the scope and dependency relationship are clear and we don’t duplicate/overlap work with #503.

    <dependencies>
        <dependency>
            <groupId>software.amazon.awssdk</groupId>
            <artifactId>sts</artifactId>
            <version>${aws.sdk.v2.version}</version>

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