Disable Color Logging by Default

### Problem Description

When running the elastic-connectors Docker image, it logs with color enabled. This causes issues when something like Filebeat collects the logs, because it includes the special characters that make color logging possible

### Proposed Solution

Disable coloring logging by default (at least for the container)

### Alternatives

Provide documentation on how to disable color logging.

### Additional Context

The issue does not name a file, test, or entry point. Start by tracing logging configuration in the elastic-connectors Docker image and its application entry point; verify the container's collected logs no longer contain color escape sequences by default, while any documented opt-in behavior remains clear.

Written by the indexing model from the issue text.