chore: update image versions - #193

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/setup-go@7b8cf10d4e4a01d4992d18a89f4d7dc5a3e6d6f4, arduino/setup-protoc@c65c819552d16ad3c9b72d9dfd5ba5237b9c906b, docker/setup-buildx-action@885d1462b80bc1c1c7f0b00334ad271f09369c55. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/