Bump mailer from 391.ve4a_38c1b_cf4b_ to 448.v5b_97805e3767#26

dependabot[bot] wants to merge 1 commit intomastersboardwell/reverse-proxy-auth-plugin:masterfrom

dependabot/maven/master/org.jenkins-ci.plugins-mailer-448.v5b_97805e3767sboardwell/reverse-proxy-auth-plugin:dependabot/maven/master/org.jenkins-ci.plugins-mailer-448.v5b_97805e3767Copy head branch name to clipboard