sysutils/zellij: Update to upstream release 0.38.1
Details:
- New major + bugfix release, see https://github.com/zellij-org/zellij/releases/tag/v0.38.0 https://github.com/zellij-org/zellij/releases/tag/v0.38.1
- This contains a breaking change for plugins. Plugins which have not been updated according to https://zellij.dev/documentation/plugin-upgrade-0.38.0 might not work starting from this version.