Update gh action zauguin/install-texlive to v2

which has caching integrated. Drop no longer needed caching steps.

See zauguin/install-texlive@v1.2.1...v2.0.0

.github/workflows/main.yaml

@@ -13,29 +13,10 @@ jobs:
       # Boilerplate
       - name: Checkout repository
         uses: actions/checkout@v3
-      # GitHub Actions don't regenerate the test if the key doesn't change, so
-      # we integrate a random UUID into the key to keep them different.
-      # DO NOT CHANGE THIS
-      - name: Generate unique ID
-        id: get-id
-        run: |
-          echo "id=$(cat /proc/sys/kernel/random/uuid)" >> $GITHUB_STATE
-      # Actually load the cache. Since we never reuse the key, we need restore-keys
-      # to indicate the prefix of our caches. This loads the newest cache with this
-      # prefix in the key.
-      #
-      # If we want to force regeneration of the cache, increase the number after
-      # *both* instances of "texlive-v"
-      - name: Load cache
-        uses: actions/cache@v3
-        with:
-          path: ~/texlive
-          key: texlive-v0-${{ steps.get-id.outputs.id }}
-          restore-keys: texlive-v0-
       # We need Ghostscript for XeTeX tests.
       - run: sudo apt-get install ghostscript
       - name: Install TeX Live
-        uses: zauguin/install-texlive@v1
+        uses: zauguin/install-texlive@v2
         with:
           # List the required TeX Live packages in a separate file to allow reuse in
           # different workflows.