update_community_metadata: TxDescriptor<{
    cid: {
        digest: FixedSizeBinary<4>;
        geohash: FixedSizeBinary<5>;
    };
    community_metadata: {
        announcement_signer?: Enum<{
            Bip340: FixedSizeBinary<32>;
        }>;
        assets: Binary;
        name: Binary;
        rules: Enum<{
            BeeDance: undefined;
            LoCo: undefined;
            LoCoFlex: undefined;
        }>;
        symbol: Binary;
        theme?: Binary;
        url?: Binary;
    };
}>

Update the metadata of the community with cid.

May only be called from T::CommunityMaster.