Ignore additional easyinstall/setup.py deprecation warnings

When using the colcon `--symlink-install` flag (as we usually do),
one gets shown the following huge warning for every Python-package:

```
/usr/lib/python3/dist-packages/setuptools/command/develop.py:40: EasyInstallDeprecationWarning: easy_install command is deprecated.
!!

        ********************************************************************************
        Please avoid running ``setup.py`` and ``easy_install``.
        Instead, use pypa/build, pypa/installer or other
        standards-based tools.

        See pypa/setuptools#917 for details.
        ********************************************************************************

!!
  easy_install.initialize_options(self)
---
```

Has been solved by: ros2/ros2#1577 (comment)

.devcontainer/zshrc

@@ -55,7 +55,7 @@ export PROMPT="%K{black} 🐋 %K{blue}%F{black} %~ %f%k%F{blue}%f "  # Pre
 # >>> bit-bots initialize >>>
 
 # Ignore some deprecation warnings
-export PYTHONWARNINGS=ignore:::setuptools.command.install,ignore:::setuptools.command.easy_install,ignore:::pkg_resources
+export PYTHONWARNINGS="ignore:::setuptools.command.install,ignore:::setuptools.command.easy_install,ignore:::pkg_resources,ignore:easy_install command is deprecated,ignore:setup.py install is deprecated"
 
 # Limit ROS 2 communication to localhost (can be overridden when needed)
 export ROS_DOMAIN_ID=24

bitbots_misc/bitbots_docs/docs/manual/tutorials/install_software_ros2.rst

@@ -109,7 +109,7 @@ In case you are not using the bash shell, replace ``~/.bashrc`` and ``bash`` wit
   # >>> bit-bots initialize >>>
 
   # Ignore some deprecation warnings
-  export PYTHONWARNINGS=ignore:::setuptools.command.install,ignore:::setuptools.command.easy_install,ignore:::pkg_resources
+  export PYTHONWARNINGS="ignore:::setuptools.command.install,ignore:::setuptools.command.easy_install,ignore:::pkg_resources,ignore:easy_install command is deprecated,ignore:setup.py install is deprecated"
 
   # Limit ROS 2 communication to localhost (can be overridden when needed)
   export ROS_DOMAIN_ID=24

scripts/setup.sh

@@ -11,7 +11,7 @@ SHELL_CONFIG="$(cat <<EOF
 # >>> bit-bots initialize >>>
 
 # Ignore some deprecation warnings
-export PYTHONWARNINGS=ignore:::setuptools.command.install,ignore:::setuptools.command.easy_install,ignore:::pkg_resources
+export PYTHONWARNINGS="ignore:::setuptools.command.install,ignore:::setuptools.command.easy_install,ignore:::pkg_resources,ignore:easy_install command is deprecated,ignore:setup.py install is deprecated"
 
 # Limit ROS 2 communication to localhost (can be overridden when needed)
 export ROS_DOMAIN_ID=24