Pass missing version number to wait script

Checkout the files from this repo first in order to have the bash
script ready that is needed to block launcher files download.

.github/workflows/build.yml

@@ -20,10 +20,15 @@ jobs:
   build-northstar:
     runs-on: ubuntu-20.04
     steps:
+      - name: Checkout release files
+        uses: actions/checkout@v3
+        with:
+          ref: ${{ env.NORTHSTAR_VERSION }}
+          path: northstar
       - 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 northstar/wait_for_launcher_dl.sh $NORTHSTAR_VERSION
       - name: Download compiled launcher
         run:
           wget "https://github.com/R2Northstar/NorthstarLauncher/releases/download/${{ env.NORTHSTAR_VERSION }}/northstar-launcher.zip"
@@ -33,11 +38,6 @@ jobs:
       - name: Download compiled stubs
         run:
           wget "https://github.com/R2Northstar/NorthstarStubs/releases/download/v1/NorthstarStubs.zip"
-      - name: Checkout release files
-        uses: actions/checkout@v3
-        with:
-          ref: ${{ env.NORTHSTAR_VERSION }}
-          path: northstar
       - name: Checkout core mods
         uses: actions/checkout@v3
         with: