fix parsing yaml with dash in keys

[jproffitt]

This fixes cogs yaml parsing when a yaml variable name has a dash/hyphen.

[Copilot]

Pull Request Overview

This PR fixes YAML parsing to properly handle keys that contain dashes by implementing a key mapping strategy that temporarily sanitizes dash-containing keys during parsing and then restores the original keys in the output.

• Adds logic to detect and map keys with dashes to sanitized versions during dotenv parsing
• Implements a unique key generation mechanism to avoid collisions when multiple keys have similar patterns
• Restores original dash-containing keys in the final cache output

Reviewed Changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 3 comments.

File	Description
test_files/kustomization.yaml	Adds test cases with dash-containing keys to validate the fix
input.go	Implements key mapping logic to handle dashes in variable names during YAML parsing
examples/4.read_types.cog.toml	Adds example configuration using a dash-containing key
cmd/cogs/main.go	Bumps version number to reflect the bug fix