docs: update changelog for iBotPeaches/Apktool#4064

Author: iBotPeaches

docs/unreleased.mdx

@@ -43,4 +43,4 @@ The changelog of the upcoming release, subject to change prior to finalization.
 - [[#4017](https://github.com/iBotPeaches/Apktool/pull/4017)] Upgrade `xmlunit-legacy` to `2.11.0`.
 - [[#4018](https://github.com/iBotPeaches/Apktool/pull/4018), [#4050](https://github.com/iBotPeaches/Apktool/pull/4050)] Upgrade `actions/upload-artifact` to `v6`.
 - [[#4033](https://github.com/iBotPeaches/Apktool/pull/4033)] Upgrade `actions/checkout` to `v6`.
-- [[#4031](https://github.com/iBotPeaches/Apktool/pull/4031)] Upgrade `r8` to `8.13.17`.
+- [[#4031](https://github.com/iBotPeaches/Apktool/pull/4031), [#4064](https://github.com/iBotPeaches/Apktool/pull/4064)] Upgrade `r8` to `8.13.19`.