fix(ci): use tmp to cache apt packages

Signed-off-by: skjnldsv <skjnldsv@protonmail.com>

Author: skjnldsv

.github/workflows/sphinxbuild.yml

@@ -58,17 +58,17 @@ jobs:
     - name: Checkout repository
       uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
 
-    - name: Configure apt cache to use /dev/shm
+    - name: Configure apt cache to use /tmp for caching LaTeX packages
       if: ${{ matrix.manual.build_pdf_path }}
       run: |
-        mkdir -p /dev/shm/apt/cache/archives
-        echo 'Dir::Cache::archives "/dev/shm/apt/cache/archives";' | sudo tee /etc/apt/apt.conf.d/apt-cache-shm
+        mkdir -p /tmp/apt/cache/archives
+        echo 'Dir::Cache::archives "/tmp/apt/cache/archives";' | sudo tee /etc/apt/apt.conf.d/apt-cache-tmp
 
     - name: Cache LaTeX apt packages
       if: ${{ matrix.manual.build_pdf_path }}
       uses: actions/cache@668228422ae6a00e4ad889ee87cd7109ec5666a7 # v5.0.4
       with:
-        path: /dev/shm/apt/cache/archives
+        path: /tmp/apt/cache/archives
         key: latex-apt-${{ runner.os }}-${{ hashFiles('.github/workflows/sphinxbuild.yml') }}
         restore-keys: |
           latex-apt-${{ runner.os }}-
@@ -92,7 +92,7 @@ jobs:
 
     - name: Fix apt cache ownership for caching
       if: ${{ matrix.manual.build_pdf_path }}
-      run: sudo chown -R $(id -u):$(id -g) /dev/shm/apt/cache/archives
+      run: sudo chown -R $(id -u):$(id -g) /tmp/apt/cache/archives
 
     - uses: actions/setup-python@a26af69be951a213d495a4c3e4e4022e16d87065 # v5.6.0
       with: