ci(actions): use newer Go and run generate

.github/workflows/build.yml

···
     - name: Set up Go
       uses: actions/setup-go@v4
       with:
-        go-version: '1.23'
+        go-version: '1.24'
 
+    - name: Generate
+      run: go generate
     - name: Build
       run: go build -v .