More information about the changes at https://github.com/zeitgeistpm/zeitgeist/releases/tag/v0.3.5

 Reject a proposed spend. The original deposit will be slashed.

 May only be called from `T::RejectOrigin`.

 # <weight>
 - Complexity: O(1)
 - DbReads: `Proposals`, `rejected proposer account`
 - DbWrites: `Proposals`, `rejected proposer account`
 # </weight>

Problem Statement:
- The problem is the need for funding to cover the costs of the public RPC endpoint service provided by Dwellir for the Moonriver community.

Significance:
- In Q3, Dwellir processed 103,216,540 million RPC requests for the Moonriver ecosystem, highlighting the high demand for this service.

Proposed Solution:
- The proposal is to request funding to cover the costs of the public RPC endpoint service for Q3 in 2022.

Expected Outcomes:
- The expected outcome is to secure funding to continue providing the public RPC endpoint service to the Moonriver community.

#6 Authorize Zeitgeist runtime v0.3.5 upgrade - motion #6