chore(ci): cache link checker (#357)

.github/workflows/links.yml

@@ -8,8 +8,24 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
+
+      - name: Restore lychee cache
+        id: restore-cache
+        uses: actions/cache/restore@v3
+        with:
+          path: .lycheecache
+          key: cache-lychee-${{ github.sha }}
+          restore-keys: cache-lychee-
 
-      - name: Link Checker
+      - name: Run lychee
         uses: lycheeverse/[email protected]
         with:
+          args: "--cache --max-cache-age 1d ."
           fail: false
+
+      - name: Save lychee cache
+        uses: actions/cache/save@v3
+        if: always()
+        with:
+          path: .lycheecache
+          key: ${{ steps.restore-cache.outputs.cache-primary-key }}