ci: reenable Windows CI build with Artifactory support (#4596)

Artifactory support was added to the `nix` builds with #4556. This
extends that support to the Windows build. Now the Windows build works;
CI will build and test a Windows release build. This only affects CI and
does not change any C++ code.

* Copy the remote setup step outcome fix from #4716 discussion
* Allow the Windows job to succeed if tests fail:
  * Currently the tests do not always pass, even on a single threaded
    run on the GitHub runners. So we are using parallel runs and mark
    the test step as allowed to fail (continue-on-error).
  * At this point, it's more important that the build succeeds than that
    the tests succeed, because:
  * We've got plenty of test coverage on the other jobs.
  * Test failures are much rarer than build failures because of
    cross-platform issues.
  * Having a test failure locally doesn't interrupt a workflow nearly as
    much as a build failure.

Note that Conan Center cannot hold the binaries we need. They do not
build the configurations we need, and they will not add them.

## Future Tasks

This introduces a new bottleneck since the build and test takes over an
hour. Speed up the job by:

* Making this job run on heavy Windows runners.
* Increasing the number of hardware threads.

.github/actions/build/action.yml

@@ -10,16 +10,12 @@ inputs:
 runs:
   using: composite
   steps:
-    - name: dependencies
-      uses: ./.github/actions/dependencies
-      with:
-        configuration: ${{ inputs.configuration }}
     - name: configure
       shell: bash
       run: |
         cd ${build_dir}
         cmake \
-          ${{ inputs.generator && format('-G {0}', inputs.generator) || '' }} \
+          ${{ inputs.generator && format('-G "{0}"', inputs.generator) || '' }} \
           -DCMAKE_TOOLCHAIN_FILE:FILEPATH=build/generators/conan_toolchain.cmake \
           -DCMAKE_BUILD_TYPE=${{ inputs.configuration }} \
           ${{ inputs.cmake-args }} \