test: remove ui test install dependency shell

Author: nattb8

.github/workflows/ui-tests.yml

@@ -88,14 +88,12 @@ jobs:
           python-version: "3.10"
       - name: Install dependencies (Windows)
         if: ${{ matrix.targetPlatform == 'StandaloneWindows64' }}
-        shell: pwsh
         run: |
           if (${{ matrix.targetPlatform }} -eq "StandaloneWindows64") {
             pip install -r "sample/Tests/requirements-desktop.txt"
           }
       - name: Install dependencies (Mac)
         if: ${{ matrix.targetPlatform != 'StandaloneWindows64' }}
-        shell: bash
         run: |
           if [[ "${{ matrix.targetPlatform }}" == "StandaloneOSX" ]]; then
             pip install -r "sample/Tests/requirements-desktop.txt"