shellcheck: ignore contrib/build-linux

.github/workflows/unittests.yml

@@ -18,6 +18,8 @@ jobs:
         uses: ludeeus/action-shellcheck@master
         with:
           version: v0.9.0
+          ignore_paths: >-
+            contrib/build-linux
       - name: Set up Python ${{ matrix.python-version }}
         uses: actions/setup-python@v4
         with: