add renovate cache

.gitea/workflows/renovate.yml

@@ -13,7 +13,15 @@ jobs:
     container: ghcr.io/renovatebot/renovate:37.19.2
     steps:
       - uses: actions/checkout@v4
-      - run: renovate
+
+      - name: Restore Renovate Cache
+        id: cache-renovate
+        uses: actions/cache/restore@v3
+        with:
+          path: /tmp/renovate/cache
+          key: ${{ runner.os }}-renovate-cache
+
+      - run: Renovate
         env:
           #RENOVATE_CONFIG_FILE: "/home/container/rconfig.js"
           LOG_LEVEL: "debug"
@@ -22,3 +30,10 @@ jobs:
           GITHUB_COM_TOKEN: ${{ secrets.GH_TOKEN }}
           HUB_DOCKER_COM_USER: ${{ secrets.HUB_DOCKER_COM_USER }}
           HUB_DOCKER_COM_TOKEN: ${{ secrets.HUB_DOCKER_COM_TOKEN }}
+
+      - name: Save Renovate Cache
+        id: cache-renovate
+        uses: actions/cache/save@v3
+        with:
+          path: /tmp/renovate/cache
+          key: ${{ steps.cache-renovate.outputs.cache-primary-key }}