fix: Revert usage of specific flutter version

frontend/Dockerfile

@@ -5,15 +5,14 @@ RUN apt-get install -y curl git wget unzip libgconf-2-4 gdb libstdc++6 libglu1-m
 RUN apt-get clean
 
 # Clone the flutter repo
-# Temporary fix while the cuppertino_icons package is not fixed to work with Flutter 3.13.0 (latest stable release).
-RUN git clone --branch 3.10.6 https://github.com/flutter/flutter.git /usr/local/flutter
+RUN git clone https://github.com/flutter/flutter.git /usr/local/flutter
 
 # Set flutter path
 ENV PATH="/usr/local/flutter/bin:/usr/local/flutter/bin/cache/dart-sdk/bin:${PATH}"
 
 # Enable flutter web
-# RUN flutter channel stable
-# RUN flutter upgrade
+RUN flutter channel stable
+RUN flutter upgrade
 RUN flutter config --enable-web
 
 # Run flutter doctor