Fix go installation

.gitea/workflows/fib-test.yaml

@@ -18,6 +18,9 @@ jobs:
           ls ${{ gitea.workspace }}
       - name: Install go
         uses: actions/setup-go@v5
+        with:
+          go-version: '1.24.4'
+          check-latest: true
       - name: Build the fib app
         run: go build
       - run: echo "🍏 This job's status is ${{ job.status }}."