CI: Install rsync and OpenSSH on Windows first

Attempts to work around actions/runner-images#594.

See this for details:
actions/runner-images#594 (comment)

.github/workflows/build.yml

@@ -123,6 +123,12 @@ jobs:
       artifact-macos-macosintel: ${{ steps.prepare_deploy.outputs.artifact-macos-macosintel }}
       artifact-windows-win64: ${{ steps.prepare_deploy.outputs.artifact-windows-win64 }}
     steps:
+    - name: "[Windows] Install rsync and openssh"
+      if: runner.os == 'Windows'
+      run: |
+        $Env:PATH="C:\msys64\usr\bin;$Env:PATH"
+        pacman -S --noconfirm coreutils bash rsync openssh
+        Add-Content -Path "$Env:GITHUB_ENV" -Value "PATH=$Env:PATH"
 
     # sccache's handling of the /fp:fast MSVC compiler option is broken, so use our fork with the fix.
     # https://github.com/mozilla/sccache/issues/950
@@ -360,15 +366,6 @@ jobs:
         --dest-url 'https://downloads.mixxx.org'
         ${{ matrix.artifacts_path }}
 
-    - name: "[Windows] Install rsync and openssh"
-      env:
-        SSH_PASSWORD: ${{ secrets.DOWNLOADS_HOSTGATOR_DOT_MIXXX_DOT_ORG_KEY_PASSWORD }}
-      if: runner.os == 'Windows' && env.SSH_PASSWORD != null
-      run: |
-        $Env:PATH="C:\msys64\usr\bin;$Env:PATH"
-        pacman -S --noconfirm coreutils bash rsync openssh
-        Add-Content -Path "$Env:GITHUB_ENV" -Value "PATH=$Env:PATH"
-
     - name: "Set up SSH Agent"
       if: github.event_name == 'push' && env.SSH_PRIVATE_KEY != null
       shell: bash