feat: run integration tests against Docker containers

[mridang]

Description

This PR refactors the integration test setup to use TestContainers with Docker Compose instead of relying on a production instance. It ensures that integration tests run in a controlled, versioned environment without requiring sensitive production tokens, and enables public contributors to successfully run the tests in their pull requests.

Motivation and Context

The current integration tests depend on a production instance, causing issues such as failing public PR tests due to missing credentials and inconsistent environments. This change solves these problems by:

• Ensuring tests can run consistently on a versioned setup.
• Removing the need for sensitive production tokens.
• Enabling public contributions to pass the integration tests.
• Reducing reliance on external services for testing.

How Has This Been Tested?

• Local Testing: I tested the new setup locally by running the integration tests using TestContainers with Docker Compose.
• CI/CD Testing: I updated the GitHub Actions CI/CD pipeline to spin up the necessary containers and run tests.
• Integration with Existing Code: Verified that the new setup does not break existing functionality and ensures all tests pass with the controlled test environment.

Documentation:

N/A

Checklist:

• I have updated the documentation accordingly.
• I have assigned the correct milestone or created one if non-existent.
• I have correctly labeled this pull request.
• I have linked the corresponding issue in this description.
• I have requested a review from at least 2 reviewers.
• I have checked the base branch of this pull request.
• I have checked my code for any possible security vulnerabilities.

[github-actions]

Qodana for Python

It seems all right 👌

No new problems were found according to the checks applied

@@ Code coverage @@
+ 73% total lines covered
773 lines analyzed, 572 lines covered
# Calculated according to the filters of your coverage tool

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