Fix bash script file name

I changed the filename but forgot to update it in the CI config

Author: GeckoEidechse

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
       - name: Wait for launcher release build to be ready
         timeout-minutes: 30 # Only wait for 30 minutes. If we take longer, something probably broke
         run:
-          bash wait_dl.sh
+          bash wait_for_launcher_dl.sh
       - name: Download compiled launcher
         run:
           wget "https://github.com/R2Northstar/NorthstarLauncher/releases/download/${{ env.NORTHSTAR_VERSION }}/northstar-launcher.zip"