Seebees/more complete tests

[seebees]

Adding CBC and GCM tests.

Starting to organize all the complete test cases for commitment policy.

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[Copilot]

Pull Request Overview

Adds comprehensive CBC and GCM test coverage and introduces an EncryptionAlgorithm model to support validating encryption modes. Also makes Ruby test servers port-configurable via environment variables and adjusts client configuration for legacy modes.

• Add KC-GCM, GCM, and CBC decryption integration tests with shared helpers for encrypt/decrypt flows.
• Update Ruby v2 client manager to set security_profile based on legacy flags; make Ruby servers read port from ENV.
• Extend Smithy model with EncryptionAlgorithm enum and config field.

Reviewed Changes

Copilot reviewed 14 out of 14 changed files in this pull request and generated 8 comments.

Show a summary per file

File	Description
test-server/ruby-v3-server/local-ruby-sdk	Submodule updated to newer commit.
test-server/ruby-v3-server/lib/client_manager.rb	Removes unused legacy wrapping flag handling (commented code cleaned).
test-server/ruby-v3-server/app.rb	Server now reads port from ENV with fallback.
test-server/ruby-v3-server/Makefile	Exports PORT to app; writes PID to PID_FILE.
test-server/ruby-v2-server/local-ruby-sdk	Submodule updated to newer commit.
test-server/ruby-v2-server/lib/client_manager.rb	Computes security_profile from legacy flags via tap block.
test-server/ruby-v2-server/app.rb	Server now reads port from ENV with 8098 fallback.
test-server/ruby-v2-server/Makefile	Defines PORT=8098, passes to app, standardizes PID handling.
test-server/model/client.smithy	Adds EncryptionAlgorithm enum and S3ECConfig.encryptionAlgorithm; adjusts CommitmentPolicy formatting.
test-server/java-tests/src/it/java/software/amazon/encryption/s3/TestUtils.java	Adds helpers for encryption/decryption and algorithm detection. Updates server targets.
test-server/java-tests/src/it/java/software/amazon/encryption/s3/RoundTripTests.java	Expands assertions to include RUBY_V2_TRANSITION.
test-server/java-tests/src/it/java/software/amazon/encryption/s3/KC_GCMTests.java	New KC-GCM test suite.
test-server/java-tests/src/it/java/software/amazon/encryption/s3/GCMTests.java	New GCM test suite.
test-server/java-tests/src/it/java/software/amazon/encryption/s3/CBCDecryptTests.java	New CBC decryption test suite using V1 client to produce CBC objects.

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