ci: update flutter.yml actions off retired Node runtimes - #128

ci: update flutter.yml actions off retired Node runtimes#128

muzahidul-opti merged 3 commits into

masteroptimizely/optimizely-flutter-sdk:masterfrom

ci/bump-flutter-workflow-actionsoptimizely/optimizely-flutter-sdk:ci/bump-flutter-workflow-actionsCopy head branch name to clipboard