Renovate Alpine version to 3.24, and Gomplate to v5.1.0 - #6

Node.js 20 is deprecated. The following actions target Node.js 20 but are being forced to run on Node.js 24: actions/cache@d4323d4df104b026a6aa633fdb11d772146be0bf, aws-actions/configure-aws-credentials@v4, docker/build-push-action@v6, docker/metadata-action@v5, docker/setup-buildx-action@v3, docker/setup-qemu-action@v3. For more information see: https://github.blog/changelog/2025-09-19-deprecation-of-node-20-on-github-actions-runners/