Bump gradle from 8.6.0-jdk21 to 8.7.0-jdk21 in /tools/refdiff#71

dependabot[bot] wants to merge 1 commit intomastersalab/refsearch:masterfrom

dependabot/docker/tools/refdiff/gradle-8.7.0-jdk21salab/refsearch:dependabot/docker/tools/refdiff/gradle-8.7.0-jdk21Copy head branch name to clipboard