Bug Report

Description

When trying to make a customized project template with update functionality. I realized that the ctx.prev_changelog_file value inside of the template is actually set by the changelog.default_templates.changelog_file setting. This is confusing to consumers as it looks like you are configuring the default templates. Need to find another way for a custom template_dir to define the previous changelog file to read from. Or recommend hard coding it into the template since it is custom.

Expected behavior

Actual behavior

Environment

• Operating System (w/ version): MacOS
• Python version: 3.12
• Semantic-release version: 9.11.0

Configuration

Additional context