Install nbclient in CI

.gitlab-ci.yml

@@ -25,7 +25,7 @@ build_pdf:
       paths:
         - /root/.julia
   script:
-    - apt-get update && apt-get install -y --no-install-recommends make pandoc jupyter curl gdebi-core librsvg2-bin && rm -rf /var/lib/apt/lists/*
+    - apt-get update && apt-get install -y --no-install-recommends make pandoc jupyter python3-nbclient curl gdebi-core librsvg2-bin && rm -rf /var/lib/apt/lists/*
     - curl -fsSL https://install.julialang.org | sh -s -- -y --default-channel release
     - source /root/.bashrc
     - julia -e "using Pkg; Pkg.add(\"IJulia\")"
@@ -76,7 +76,7 @@ build_pages:
       paths:
         - /root/.julia
   script:
-    - apt-get update && apt-get install -y --no-install-recommends make pandoc jupyter curl gdebi-core && rm -rf /var/lib/apt/lists/*
+    - apt-get update && apt-get install -y --no-install-recommends make pandoc jupyter python3-nbclient curl gdebi-core && rm -rf /var/lib/apt/lists/*
     - julia -e "using Pkg; Pkg.add(\"IJulia\")"
     - julia -e "using IJulia; IJulia.installkernel(\"julia\")"
     - curl -LO https://quarto.org/download/latest/quarto-linux-amd64.deb