Add your own signing config for the release build.

[todo]

Jenkins-Flutter/example/android/app/build.gradle

Lines 46 to 51 in cacc307

	// TODO: Add your own signing config for the release build.
	// Signing with the debug keys for now, so `flutter run --release` works.
	signingConfig signingConfigs.debug
	}
	}
	}

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This issue was generated by todo based on a TODO comment in cacc307. It's been assigned to @undefined because they committed the code.