Update psr/log dependency to support versions ^1.1, ^2.0, and ^3.0#8

mjschenk wants to merge 2 commits intoCCV:masterCCV/ccvonlinepayments-php-lib:masterfrom

mjschenk:mjschenk-patch-1mjschenk/ccvonlinepayments-php-lib:mjschenk-patch-1Copy head branch name to clipboard