describe-changes@v1: with concatenate mode: append

✨ PR Description

Purpose: Update Hello Elementor theme version from 3.4.4 to 3.4.5 across all configuration files to prepare for release.
Main changes:

• Bumped version number from 3.4.4 to 3.4.5 in functions.php definition
• Updated version and stable tag to 3.4.5 in style.css theme metadata
• Changed package version to 3.4.5 in package.json configuration file

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