ci: "updateContentCommand" witp directory permissions setting added to .devcontainer

Author: mpusz

.devcontainer/devcontainer.json

@@ -73,6 +73,7 @@
   "runArgs": [
     "--init"
   ],
+  "updateContentCommand": "sudo mkdir -p /workspaces/api_reference_deps && sudo chown -R ubuntu:ubuntu /workspaces/api_reference_deps",
   "postCreateCommand": "pipx upgrade conan && .devcontainer/api_reference.sh -s && .devcontainer/check_all.sh -d install",
   "postStartCommand": "echo '🚀 mp-units development environment ready!' && echo '🧪 Use `.devcontainer/check_all.sh [-d] build` to test all compiler configurations.' && echo '📖 Use `.devcontainer/api_reference.sh` to generate the API reference documentation.'",
   "forwardPorts": [