Bump testng from 7.6.1 to 7.7.1 in /dockerfile-image-update-itest#720

dependabot[bot] wants to merge 1 commit intomainsalesforce/dockerfile-image-update:mainfrom

dependabot/maven/dockerfile-image-update-itest/org.testng-testng-7.7.1salesforce/dockerfile-image-update:dependabot/maven/dockerfile-image-update-itest/org.testng-testng-7.7.1Copy head branch name to clipboard