Update naming of 'Maker DSR' market to 'Sky DSR'

[akhamisa]

There's no official reference to Maker anymore when speaking of the Dai Savings Rate, given the rebrand. Block Analitica also recommends we update the market naming in the Hyperdrive One UI

Maker DSR --> Sky DSR
(Note, the Sky SSR yield source continues to underpin a separate and distinct Hyperdrive market)

The analytics dashboard already refers to this market as the Sky DSR market:
https://hyperdrive.blockanalitica.com/ethereum/markets/0x324395d5d835f84a02a75aa26814f6fd22f25698