github: Print the chosen versions in the get-versions job

They are printed in the later jobs that use them already though,
but print them here too, for clarity.

.github/workflows/build.yml

@@ -25,6 +25,7 @@ jobs:
           echo LLVM_VERSION=$(git ls-remote https://github.com/llvm/llvm-project.git | grep 'refs/heads/main$' | awk '{print $1}') >> versions
           echo MINGW_W64_VERSION=$(git ls-remote https://github.com/mingw-w64/mingw-w64.git | grep 'refs/heads/master$' | awk '{print $1}') >> versions
           echo PYTHON_VERSION_MINGW=$(git ls-remote https://github.com/msys2-contrib/cpython-mingw.git | grep 'refs/heads/mingw-v3.10.5$' | awk '{print $1}') >> versions
+          cat versions
       - uses: actions/upload-artifact@v2
         with:
           name: versions