Yahoo Finance Online Quotes source URL needs updating

Yahoo Finance API has changed and needs updating. Using the example ticker VTSAX, the URL should be https://query1.finance.yahoo.com/v8/finance/chart/VTSAX, but KMyMoney checks outdated URL https://query1.finance.yahoo.com/v7/finance/quote?fields=regularMarketPrice&symbols=VTSAX.

The bug has been tracked already as bug 469431.