fix(ci): use setup-go built-in cache, remove go-hashfiles and actions/cache from Go builds

.gitea/workflows/build_device_agent.yaml

@@ -22,23 +22,7 @@ jobs:
       - uses: actions/setup-go@v5
         with:
           go-version: '1.26'
-          cache: false
-
-      - uses: https://gitea.com/actions/go-hashfiles@v0.0.1
-        id: hash-go
-        with:
-          patterns: |
-            apps/device-agent/go.mod
-            apps/device-agent/go.sum
-
-      - uses: actions/cache@v3
-        with:
-          path: |
-            /toolcache/go
-            /root/go/pkg/mod
-            /root/.cache/go-build
-          key: go-device-agent-${{ steps.hash-go.outputs.hash }}
-          restore-keys: go-device-agent-
+          cache: true
 
       - name: Build all platforms
         working-directory: apps/device-agent

.gitea/workflows/build_server_core.yaml

@@ -22,27 +22,7 @@ jobs:
       - uses: actions/setup-go@v5
         with:
           go-version: '1.26'
-          cache: false
-
-      - uses: https://gitea.com/actions/go-hashfiles@v0.0.1
-        id: hash-go
-        with:
-          patterns: |
-            apps/server-core/go.mod
-            apps/server-core/go.sum
-
-      - uses: actions/cache@v3
-        with:
-          path: |
-            /toolcache/go
-            /root/go/pkg/mod
-            /root/.cache/go-build
-          key: go-server-core-${{ steps.hash-go.outputs.hash }}
-          restore-keys: go-server-core-
-
-      - name: Download Go modules
-        working-directory: apps/server-core
-        run: go mod download
+          cache: true
 
       - name: Generate Swagger docs
         working-directory: apps/server-core