Update nightly.yml

Author: opensource-krzysztof

.github/workflows/nightly.yml

@@ -87,7 +87,7 @@ jobs:
      run: |
        call "C:\Program Files (x86)\Intel\oneAPI\setvars.bat"
        call "C:\Program Files (x86)\Intel\oneAPI\setvars-vcvarsall.bat"
-       sh -l
+       bash
        cmake ^
          -B ${{env.BUILD_DIR}} ^
          -DCMAKE_PREFIX_PATH="${{env.VCPKG_PATH}}" ^