Update unit-test.yaml

Author: Tyler Titsworth

.github/workflows/unit-test.yaml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: docker/login-action@v3
         with:
-          registry: ${{ vars.REGISTRY }}
+          registry: ${{ secrets.REGISTRY }}
           username: ${{ secrets.REGISTRY_USER }}
           password: ${{ secrets.REGISTRY_TOKEN }}
       - name: Install requirements
@@ -27,4 +27,4 @@ jobs:
         run: venv/bin/python -m pytest tests/utest.py -W ignore::UserWarning
         working-directory: ${{ github.workspace }}/test-runner
         env:
-          REGISTRY: ${{ vars.REGISTRY }}
+          REGISTRY: ${{ secrets.REGISTRY }}