chore: add cross repo test action

[radu-mocanu]

• add cross repo test action

[Copilot]

Pull request overview

This PR adds cross-repository testing workflows that enable testing changes in the uipath-runtime-python repository against dependent repositories (uipath-python and uipath-langchain-python). The workflows are triggered by labels and run unit tests as well as integration tests across multiple environments and Python versions.

Changes:

• Added GitHub Actions workflow to test uipath-runtime-python changes against the uipath-python repository
• Added GitHub Actions workflow to test uipath-runtime-python changes against the uipath-langchain-python repository
• Added labeler configuration to automatically apply test labels based on file changes

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 16 comments.

File	Description
.github/workflows/test-uipath.yml	Workflow for testing runtime changes against uipath-python, including unit tests and integration tests across alpha/staging environments
.github/workflows/test-uipath-langchain.yml	Workflow for testing runtime changes against uipath-langchain-python, including unit tests and integration tests with LLM variations
.github/labeler.yml	Configuration to auto-apply test:uipath and test:uipath-langchain labels when src/**/*.py files change

Comments suppressed due to low confidence (1)

.github/workflows/test-uipath.yml:142

• The testcase execution relies on bash scripts (run.sh and validate_output.sh) that are expected to exist in the target repository (uipath-python/testcases/*/run.sh). If these scripts don't exist or fail, the workflow will fail without a clear error message. Consider adding validation to check if these scripts exist before attempting to execute them, or wrapping the execution in error handling that provides more context about which testcase failed and why.

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