workflow: create release workflow section

Signed-off-by: Ruffalo Lavoisier <RuffaloLavoisier@gmail.com>

.github/workflows/test-OSW.yml

@@ -89,11 +89,21 @@ jobs:
         with:
           name: firmwares
           path: "*.bin"
-      - name: Release
+
+  # do this last step seperately to avoid race conditions with firmware upload
+  create-release:
+    runs-on: ubuntu-latest
+    needs: build-OSW
+    if: startsWith(github.ref, 'refs/tags/v')
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          pattern: "*.bin"
+          merge-multiple: true
+      - name: Create release and upload firmware to it
         uses: softprops/action-gh-release@v2
         with:
-          files: "*.bin" 
+          files: "*.bin"
           draft: true
           prerelease: true
           generate_release_notes: true
-        if: startsWith(github.ref, 'refs/tags/v')