gomod: bump golang.org/x/mod from 0.27.0 to 0.31.0#21

dependabot[bot] wants to merge 1 commit intomaincockroachdb/field-eng-powertools:mainfrom

dependabot/go_modules/golang.org/x/mod-0.31.0cockroachdb/field-eng-powertools:dependabot/go_modules/golang.org/x/mod-0.31.0Copy head branch name to clipboard