[ARFC] Polygon v2 Borrow Rate Adjustments

The next round of updates (early August) will bring the following Borrow Rate adjustments:

Asset Market Current Slope1 Proposed Slope1
DAI Polygon v2 12.00% 12.75%
USDT Polygon v2 12.00% 12.75%
wBTC Polygon v2 7.00% 7.75%
wETH Polygon v2 7.00% 7.75%
wUSDC Polygon v2 12.00% 12.75%
wMATIC Polygon v2 9.00% 9.75%