Add bootstrap command as a step in the yaml file

Author: shaoltan-amazon

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

@@ -54,6 +54,10 @@ jobs:
               with:
                   gh-context: ${{ toJson(github) }}
 
+            - name: Run bootstrap command
+              run: |
+                  source scripts/bootstrap.sh
+
             - name: Build Linux tv-app
               run: |
                   gn gen --check --fail-on-unused-args --root=examples/tv-app/linux out/tv-app '--args=chip_crypto="boringssl" is_asan=true is_clang=true'