chore: update gitea action

.gitea/workflows/build.yml

@@ -0,0 +1,27 @@
+name: Build
+on:
+  push:
+  pull_request:
+
+permissions:
+  contents: read
+
+jobs:
+  build:
+    name: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0 # all history for all branches and tags
+
+      - uses: actions/setup-go@v6
+        with:
+          go-version-file: go.mod
+          check-latest: true
+          cache: false
+
+      - name: Build
+        run:
+          go build .