Update pinnings (mainly assimp 6)

[diegoferigo-rai]

Follows up:

• Rebuild 0.15 to align missing pins #79

that achieved a successful rebuild without updating any package pinning (from #79 (comment)).

Hopefully fixing:

• Pixi fails to resolve deps after last rebuild (0.14.0) #77

[Tobias-Fischer]

Thanks @diegoferigo-rai! I'd be keen to fix #76 while we are at it .. @diegoferigo-rai @traversaro @eholum would any of you be happy to try @traversaro's suggested patch?

[Tobias-Fischer]

Same error as RoboStack/ros-jazzy#212 (comment)

[Tobias-Fischer]

What do you think we should do here @traversaro ?

[traversaro]

What do you think we should do here @traversaro ?

I would just revert the patch to https://github.com/RoboStack/ros-jazzy/blob/main/patch/ros-jazzy-rosidl-generator-py.osx.patch, perhaps by just changing the line target_include_directories(${_target_name_lib} PUBLIC ${Python3_INCLUDE_DIRS} ${Python3_NumPy_INCLUDE_DIRS}) to target_include_directories(${_target_name_lib} PRIVATE ${Python3_INCLUDE_DIRS} ${Python3_NumPy_INCLUDE_DIRS}) to also fix RoboStack/ros-jazzy#213 .