fix: pip-compile path

Author: andhreljaKern

.github/workflows/pi_build.yml

@@ -67,7 +67,7 @@ jobs:
         run: python -m pip install pip-tools
 
       - name: Compile Requirements
-        run: pip-compile requirements/${{ matrix.parent_image_type }}-requirements.in
+        run: pip-compile submodules/parent-images/requirements/${{ matrix.parent_image_type }}-requirements.in
 
       - name: Create PR - ${{ matrix.app }}
         run: |