Added cache restore

.github/workflows/publish.yaml

@@ -15,6 +15,12 @@ jobs:
         run: | 
           apt -y install curl
           curl --proto '=https' --tlsv1.2 -fsSL https://drop-sh.fullyjustified.net |sh
+      - name: Restore cache
+        id: cache-restore
+        uses: actions/cache/restore@v4
+        with:
+          path: ~/.cache/Tectonic
+        key: ${{ runner.os }}-tectonic-
       - name: Compile latex
         run: ./tectonic main.tex
       - name: Rename PDF
@@ -32,6 +38,4 @@ jobs:
         with:
           path: ~/.cache/Tectonic
           key: ${{ runner.os }}-tectonic-${{ hashFiles('**/*.tex') }}
-          restore-keys: |
-            ${{ runner.os }}-tectonic-