Authorize the upgrade to zeitgeist-runtime v0.4.1 (spec_version 50)

https://github.com/zeitgeistpm/zeitgeist/releases/tag/v0.4.1

 Schedule a majority-carries referendum to be tabled next once it is legal to schedule
 an external referendum.

 Unlike `external_propose`, blacklisting has no effect on this and it may replace a
 pre-scheduled `external_propose` call.

- Problem Statement: Upgrade to zeitgeist-runtime v0.4.1 (spec_version 50) for the Polkassembly Council.
- Significance: Enhancing the functionality and performance of the Polkassembly Council platform.
- Proposed Solution: Authorize the upgrade to zeitgeist-runtime v0.4.1.
- Expected Outcomes: Improved platform efficiency and user experience.

#37 Upgrade to v0.4.1 (spec_version 50)