Show the built CLI's version on Windows too

We have to do this in a Bash shell, since in the cmd shell Qt will
show the version in a message box (which is, debatably, poor Qt
behaviour; eg https://bugreports.qt.io/browse/QTBUG-114530).

.github/workflows/build.yaml

@@ -367,8 +367,12 @@ jobs:
         copy /v /b src\cli\dokit.exe /b portable
         cd portable
         windeployqt --compiler-runtime --release --verbose 2 dokit.exe ${{ matrix.dll }}
-        :: dokit.exe --version
+        :: dokit.exe --version # This would hang the job, because Qt will show a message box.
       working-directory: ${{ runner.temp }}
+    - name: Check portable
+      if: matrix.arch != 'arm64'
+      shell: bash
+      run: "$RUNNER_TEMP/portable/dokit.exe" --version
     - name: Setup artifacts
       shell: bash
       run: echo "dokitVersion=$(cat "$RUNNER_TEMP/version.txt")" >> $GITHUB_ENV