Pin graphviz to 8

Author: traversaro

.github/workflows/ci.yml

@@ -75,7 +75,7 @@ jobs:
       shell: bash -l {0}
       run: |
         # Dependencies
-        mamba install ace asio assimp boost eigen freetype gazebo glew glfw glm graphviz gsl ipopt irrlicht libjpeg-turbo libmatio libode libxml2 nlohmann_json pcl vtk opencv portaudio qt-main sdl sdl2 sqlite tinyxml spdlog lua soxr cmake compilers make ninja pkg-config tomlplusplus libzlib ffmpeg
+        mamba install ace asio assimp boost eigen freetype gazebo glew glfw glm graphviz==8.* gsl ipopt irrlicht libjpeg-turbo libmatio libode libxml2 nlohmann_json pcl vtk opencv portaudio qt-main sdl sdl2 sqlite tinyxml spdlog lua soxr cmake compilers make ninja pkg-config tomlplusplus libzlib ffmpeg
         # Python 
         mamba install python numpy swig pybind11 pyqt matplotlib h5py tornado u-msgpack-python pyzmq ipython gst-plugins-good gst-plugins-bad
 

doc/conda-forge.md

@@ -134,12 +134,12 @@ Once you activated it, you can install packages in it. In particular the depende
 
 If you are on **Linux**, **Windows**, or **macOS** with an Intel-based processor:
 ~~~
-mamba install -c conda-forge ace asio assimp boost eigen freetype gazebo glew glfw glm graphviz gsl ipopt irrlicht libjpeg-turbo libmatio libode libxml2 nlohmann_json pcl opencv portaudio qt-main sdl sdl2 sqlite tinyxml tinyxml2 spdlog lua soxr qhull cmake compilers make ninja pkg-config tomlplusplus libzlib ffmpeg
+mamba install -c conda-forge ace asio assimp boost eigen freetype gazebo glew glfw glm graphviz==8.* gsl ipopt irrlicht libjpeg-turbo libmatio libode libxml2 nlohmann_json pcl opencv portaudio qt-main sdl sdl2 sqlite tinyxml tinyxml2 spdlog lua soxr qhull cmake compilers make ninja pkg-config tomlplusplus libzlib ffmpeg
 ~~~
 
 If you are on **macOS** with ARM-based processor:
 ~~~
-mamba install -c conda-forge asio assimp boost eigen freetype gazebo glew glfw glm graphviz gsl ipopt irrlicht libjpeg-turbo libmatio libode libxml2 nlohmann_json pcl opencv portaudio qt-main sdl sdl2 sqlite tinyxml tinyxml2 spdlog lua soxr qhull cmake compilers make ninja pkg-config tomlplusplus libzlib ffmpeg
+mamba install -c conda-forge asio assimp boost eigen freetype gazebo glew glfw glm graphviz==8.* gsl ipopt irrlicht libjpeg-turbo libmatio libode libxml2 nlohmann_json pcl opencv portaudio qt-main sdl sdl2 sqlite tinyxml tinyxml2 spdlog lua soxr qhull cmake compilers make ninja pkg-config tomlplusplus libzlib ffmpeg
 ~~~
 
 If you are on **Linux x86-64**, you also need to install also the following packages: