kicad 8 for gh actions workflow

.github/workflows/docs.yml

 
       - name: Install dependencies
         run: |
-          sudo add-apt-repository --yes ppa:kicad/kicad-7.0-releases
+          sudo add-apt-repository --yes ppa:kicad/kicad-8.0-releases
           sudo apt update
           sudo apt install -y --install-recommends kicad pipx libfuse2 libegl1 poppler-utils
 
           curl -sSL $url | tar -xz --directory=./mdbook
           echo `pwd`/mdbook >> $GITHUB_PATH
 
-      - name: Install (more current) PrusaSlicer
-        run: |
-          url="https://github.com/prusa3d/PrusaSlicer/releases/download/version_2.7.1/PrusaSlicer-2.7.1+linux-x64-GTK3-202312121425.AppImage"
-          mkdir prusa
-          curl -o prusa/prusa-slicer -sSL $url
-          chmod a+x prusa/prusa-slicer
-          echo `pwd`/prusa >> $GITHUB_PATH
-
       - name: Install JLC2KiCad_lib
         run: pipx install git+https://github.com/Xyntexx/JLC2KiCad_lib.git@footprint_alignment_workarounds
 
       - name: Fetch part footprints
         run: hardware/fetch_jlc.sh
 
-      - name: Generate Plots
-        run: hardware/generate_plot.sh
-
       - name: Build Book
         run: docs/generate_docs.sh build
 

.github/workflows/kicad.yml

         with:
           fetch-depth: 0
 
+      - name: Checkout repo submodules
+        run: git submodule update --init
+
       - name: Install dependencies
         run: |
-          sudo add-apt-repository --yes ppa:kicad/kicad-7.0-releases
+          sudo add-apt-repository --yes ppa:kicad/kicad-8.0-releases
           sudo apt update
           sudo apt install -y --install-recommends kicad
           sudo apt-get install -y zip