Update to Go 1.23

[lucacome]

This pull request includes updates to the GitHub Actions workflows and dependencies, as well as improvements to the Dockerfile. The most important changes include updating the setup-go action to the latest version, modifying the Dockerfile to use a newer Go version, and adding a dependabot configuration for automated dependency updates.

GitHub Actions Workflow Updates:

• Updated the setup-go action to use the latest version and set the Go version to stable in .github/workflows/go.yml, .github/workflows/test.yml [1] [2].
• Updated the checkout action to version 4 in .github/workflows/go.yml, .github/workflows/integration.yml, .github/workflows/publish.yml, and .github/workflows/test.yml [1] [2] [3] [4].
• Updated the docker/setup-buildx-action to version 3 in .github/workflows/publish.yml.

Dependency Management:

• Added a dependabot configuration file to automate dependency updates for GitHub Actions and Go modules (.github/dependabot.yml).

Dockerfile Improvements:

• Updated the base image to use Go version 1.23 in Dockerfile.

Module Configuration:

• Added a go.mod file to define the module and its dependencies (go.mod).