exclude Yaml dir from linting

Author: NSoiffer

.github/workflows/lint.yaml

@@ -29,4 +29,4 @@ jobs:
     - name: Install dependencies
       run: pip install -r requirements.txt
     - name: Lint
-      run: flake8 code/addon --max-line-length=130
+      run: flake8 code/addon --max-line-length=130 --extend-exclude=addon/globalPlugins/MathCAT/yaml/*