Fix `devcontainer` and testing `Dockerfile` · basnijholt/adaptive-lighting@857ff13

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

The `set-output` command is deprecated and will be disabled soon. Please upgrade to using Environment Files. For more information see: https://github.blog/changelog/2022-10-11-github-actions-deprecating-save-state-and-set-output-commands/

### WARNING! Deprecation warnings muted with option '--use-pep517' please address this at some point in pytest.yaml. ###

Node.js 16 actions are deprecated. Please update the following actions to use Node.js 20: actions/checkout@v3, actions/[email protected]. For more information see: https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/.

### If tests fail, try these debug steps: ###

### 1. Replace '-qq' from .github/workflow/pytest.yaml. with '-v' for extra verbosity. ###

### 2. Push or run action again. ###

### 3. Check for any log messages in github actions resembling the following using CTRL+F ###

### 5. add 'component'.'module' (without the '') from the above log into the 'required' list inside of 'test_dependencies.py' ###

### 6. Try again! If more issues persist they should be easily solvable by reading the verbose logs now. ###

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