Update dependency go to v1.25.6

Author: renovate[bot]

.github/workflows/go.yml

@@ -8,6 +8,6 @@ jobs:
     - uses: actions/checkout@master
     - uses: actions/setup-go@v5
       with:
-        go-version: '1.9.3' # The Go version to download (if necessary) and use.
+        go-version: '1.25.6' # The Go version to download (if necessary) and use.
     - run: sudo apt-get install libasound2
            make