Laravel defers to PDO & the underlying database as to what type decimals are cast as.
When using sqlite text that match a float will be returned as a float, while mySql always returns a string for a decimal.
This leads to crashes with sqlite while trying to import tranansactions. (It does not happen every transaction, only when the balance{before,after} coming from the database is floatable)
`FireflyIII\Support\Models\AccountBalanceCalculator::getLatesBalance(): Return value must be of type string, float returned.`
Fixes: #9458
Signed-off-by: yparitcher <y@paritcher.com>