github: Install requirements unconditionally

This makes tests less brittle as any renames to requirements files will
be noticed.

Signed-off-by: Povilas Kanapickas <povilas@radix.lt>

.github/workflows/test.yml

@@ -24,8 +24,8 @@ jobs:
         set -e
         apt update && apt install -y podman
         python -m pip install --upgrade pip
-        if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
-        if [ -f test-requirements.txt ]; then pip install -r test-requirements.txt; fi
+        pip install -r requirements.txt
+        pip install -r test-requirements.txt
     - name: Run integration tests
       run: |
         python -m unittest discover -v tests/integration