Adding coreutils install instructions.

Author: shaoltan-amazon

.github/workflows/examples-linux-tv-casting-app.yaml

@@ -42,6 +42,10 @@ jobs:
             - name: Checkout
               uses: actions/checkout@v4
 
+            - name: Setup Environment
+              # coreutils for stdbuf
+              run: brew install coreutils
+
             - name: Checkout submodules & Bootstrap
               uses: ./.github/actions/checkout-submodules-and-bootstrap
               with: