Updated Flutter driver to version 3.2.0

Author: budtmo

Appium/Dockerfile

@@ -144,7 +144,7 @@ USER 1300:1301
 # Install basic Android drivers
 #===============================
 ENV APPIUM_DRIVER_ESPRESSO_VERSION="6.0.5"
-ENV APPIUM_DRIVER_FLUTTER_VERSION="3.0.1"
+ENV APPIUM_DRIVER_FLUTTER_VERSION="3.2.0"
 ENV APPIUM_DRIVER_GECKO_VERSION="2.0.4"
 ENV APPIUM_DRIVER_UIAUTOMATOR2_VERSION="5.0.5"
 RUN appium driver install --source=npm appium-espresso-driver@${APPIUM_DRIVER_ESPRESSO_VERSION} && \