update: some updates to the deploy action

.github/workflows/deploy.yml

@@ -12,6 +12,14 @@ jobs:
       - uses: actions/setup-go@v5
         with:
           go-version: '1.23'
+      - name: Cache Go modules
+        uses: actions/cache@v4
+        with:
+          path: |
+            ~/go/pkg/mod
+            ~/.cache/go-build
+          key: ${{ runner.os }}-go-${{ hashFiles('go.sum') }}
+          restore-keys: ${{ runner.os }}-go-
       - name: Run tests
         run: go test ./...
       - name: Deploy to server