Make sure that GitHub Actions still builds

.github/workflows/ios.yml

@@ -20,7 +20,7 @@ jobs:
         run: git submodule update --init --recursive
       
       - name: Set up build environment pt. IV
-        run: brew install ldid dpkg fakeroot
+        run: brew install ldid dpkg fakeroot gsed
         
       - name: Build the native application
         run: make native