The purpose of this referendum is to perform a runtime upgrade on Pendulum. This includes:

- [Adding EURC to Zenlink ID map](https://app.zenhub.com/workspaces/pendulum-6408a0365cda59c57d39bee5/issues/gh/pendulum-chain/pendulum/468)
- Updating the treasury buyout feature such that it [takes decimals into account](https://github.com/pendulum-chain/pendulum/issues/460)

For more details, please refer to the [GitHub release page](https://github.com/pendulum-chain/pendulum/releases/tag/pendulum-release-17).


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

The dispatch of this call must be `ExternalMajorityOrigin`.

- `proposal_hash`: The preimage hash of the proposal.

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

Weight: `O(1)`

Authorize an upgrade to a given `code_hash` for the runtime. The runtime can be supplied
later.

The `check_version` parameter sets a boolean flag for whether or not the runtime's spec
version and name should be verified on upgrade. Since the authorization only has a hash,
it cannot actually perform the verification.

This call requires Root origin.

- **Problem Statement:** Runtime upgrade needed for Pendulum.
- **Significance:** Enhancing functionality by adding EURC to Zenlink ID map and updating treasury buyout feature.
- **Proposed Solution:** Perform the runtime upgrade on Pendulum.
- **Expected Outcomes:** Improved functionality and compatibility for Pendulum users.

#37 Authorize runtime upgrade for Pendulum release 17