Update Processing Lambda Unit Tests & Refactor for ruff

[Alrobbertz]

No description provided.

[Copilot]

Pull request overview

This PR updates the test/linting setup toward newer dependencies and Ruff, while making minor formatting/docstring adjustments in the Lambda processor code.

Changes:

• Replaces Black/Flake8 dev tooling with Ruff and updates pytest/moto versions.
• Updates GitHub Actions workflows for testing, coverage upload, and Ruff linting.
• Removes the local Lambda config file and applies minor import/docstring formatting changes.

Reviewed changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
requirements.dev.txt	Updates test/dev dependencies and switches lint tooling to Ruff.
lambda_function/tests/test_processor.py	Refactors imports and removes pre-import config path setup.
lambda_function/src/lambda.py	Adds type annotations and rewrites handler docstring.
lambda_function/src/file_processor/file_processor.py	Applies Ruff-style import ordering and spacing.
lambda_function/src/config.yaml	Removes the mission configuration file.
.github/workflows/testing.yml	Updates test workflow runner/actions/dependency install/coverage upload.
.github/workflows/codestyle.yml	Replaces Black/Flake8 workflow with Ruff workflow.

Comments suppressed due to low confidence (1)

lambda_function/src/config.yaml:1

• Deleting the only checked-in SDC AWS config leaves the Lambda image without the mission/bucket/instrument settings that file_processor still needs via sdc_aws_utils.config (get_instrument_bucket, get_instrument_package, and the filename parser). The previous tests explicitly pointed SDC_AWS_CONFIG_FILE_PATH at this file before importing the processor, so removing it without providing an alternative config path will break local tests and deployments that rely on the copied src tree.

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