docs: update changelog for iBotPeaches/Apktool#4018

Author: iBotPeaches

docs/unreleased.mdx

@@ -31,3 +31,4 @@ The changelog of the upcoming release, subject to change prior to finalization.
 - [[#4003](https://github.com/iBotPeaches/Apktool/pull/4003)] Upgrade `gradle/actions` to `5.0.0`.
 - [[#4011](https://github.com/iBotPeaches/Apktool/pull/4011)] Upgrade `github/codeql-action` to `v4`.
 - [[#4017](https://github.com/iBotPeaches/Apktool/pull/4017)] Upgrade `xmlunit-legacy` to `2.11.0`.
+- [[#4018](https://github.com/iBotPeaches/Apktool/pull/4018)] Upgrade `actions/upload-artifact` to `v5`.