fix: support both .yaml and .yml files case-insensitively in FileUtil.getAllYamlFiles#1

dieppa merged 1 commit intomasterflamingock/flamingock-java-general-util:masterfrom

fix/fileutil-yaml-files-extensionflamingock/flamingock-java-general-util:fix/fileutil-yaml-files-extensionCopy head branch name to clipboard