Fix pip3 install failing (#1992)

Signed-off-by: Antón Casas <[email protected]>

Author: 4ntn

.github/workflows/ci.yml

@@ -20,7 +20,7 @@ jobs:
           run: |
             apt update
             apt install -y git curl lib32z1 wget libfontconfig libxft2 xz-utils rsync python-is-python3 python3-pip
-            pip3 install pyserial
+            pip3 install pyserial --break-system-packages
             curl -fsSL https://raw.githubusercontent.com/arduino/arduino-cli/master/install.sh | sh -s 0.31.0
             mkdir -p /github/home/Arduino/libraries/micro_ros_arduino/
             cp -R checkout/* /github/home/Arduino/libraries/micro_ros_arduino/