[CI] fix Matlab batch script path

Author: tttapa

.github/workflows/matlab.yml

@@ -66,6 +66,8 @@ jobs:
       with:
         files: alpaqa-matlab-${{ matrix.name }}.zip
 
+    - run: conan cache clean
+
   build-windows:
     strategy:
       matrix:
@@ -95,7 +97,7 @@ jobs:
     - name: Build
       shell: cmd
       run: >
-        call scripts\ci\build-matlab-windows.bat
+        call .\scripts\ci\build-matlab-windows.bat
         "${{ steps.matlab.outputs.matlabroot }}" "${{ matrix.host }}" "." "staging"
 
     - name: Package