Update changelog for unreleased changes since v4.6.0

[Copilot]

This PR updates the [Unreleased] section of the changelog to document changes made since the last release (v4.6.0 on 2025-09-18).

Changes Documented

The changelog now includes the improvement from PR #85 which enhances the validateOrFail method to properly filter nested structs and arrays. Previously, only top-level keys were filtered to match constraints, but now the filtering applies recursively to nested data structures as well.

This update prepares the changelog for the next release by following the repository's standard format with sections for:

• Added
• Changed
• Removed
• Fixed
• Chore

The improvement is documented under the "Changed" section as it modifies existing behavior to work more comprehensively with nested data.

References

• PR fix(ValidateOrFail): Handle filtering nested structs and arrays #85: fix(ValidateOrFail): Handle filtering nested structs and arrays #85
• Related JIRA: https://ortussolutions.atlassian.net/browse/BOX-161

Fixes the issue requesting an updated changelog for the next release.

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Update changeling for release</issue_title>
<issue_description>Update the unreleased changeling according to the repo and last release. This way I ca do a new release.

I always use different sections

• added
• changed
• removed
• fixed
• chore</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #86

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