CI: Fix Steam Upload

The recent addition of WoA builds caused Steam Upload to fail. Be more
explicit about what file to unzip and what files to remove to get the
Steam Upload for Windows x64 working again.

Note that this does remove all Windows zip files and not just the x64
ones. This is because we don't currently process the WoA files, and the
intent here seems to be to clean up all unnecessary files before running
the actual upload step. This will have to be updated if/when this is
updated to process WoA files.

.github/actions/steam-upload/action.yaml

@@ -168,8 +168,8 @@ runs:
 
         print '::group::Prepare Windows x64 assets'
         mkdir -p steam-windows && pushd steam-windows
-        unzip ${root_dir}/(#i)obs-studio-(^*-pdbs).zip
-        rm ${root_dir}/(#i)obs-studio-*.zip
+        unzip ${root_dir}/(#i)obs-studio-*-windows.zip
+        rm ${root_dir}/(#i)obs-studio-*-windows*.zip
 
         cp -r ${root_dir}/build-aux/steam/scripts_windows scripts
         touch disable_updater