fix: check enrollment status before issuing Learning Path credentials

[Agrendalath]

This adds Learning Path enrollment checks implemented in open-craft/learning-paths-plugin#19.

Private-ref: BB-9669

[Copilot]

Pull Request Overview

This PR fixes the issuance of Learning Path credentials by verifying that users are actively enrolled in the Learning Path before processing completion and grade data. Key changes include:

• Filtering out users not enrolled (with an active enrollment) in the Learning Path in the processor.
• Updating tests to simulate learning path enrollment and verify the new behavior.
• Bumping dependency versions and updating the package version in the module’s init.

Reviewed Changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated no comments.

File	Description
tests/test_processors.py	Updated fixtures and tests to incorporate enrollment checks and adjust expected results.
requirements/.txt and requirements/	Multiple dependency version bumps, including the learning-paths-plugin update and others.
learning_credentials/processors.py	Added filtering logic to exclude users without an active enrollment from eligibility.
learning_credentials/init.py	Updated module version from 0.2.0 to 0.2.1.

Files not reviewed (1)

• CHANGELOG.rst: Language not supported

Comments suppressed due to low confidence (1)

tests/test_processors.py:362

• The test 'test_retrieve_data_for_learning_path' does not enroll any users into the learning path, meaning the enrollment check in _process_learning_context will cause the result to be empty. Please add enrollment for the expected users before calling the processor to ensure the test accurately reflects the new behavior.

def test_retrieve_data_for_learning_path(