Update release checklist after the 1.3.7 release.

Additional steps developed during the release processes.

Signed-off-by: Mark Harris <mark.hsj@gmail.com>
2 jobs for 1.3.7-followup in 1 minute and 57 seconds (queued for 2 seconds)
Status Job ID Name Coverage
  Build
passed #10675
docker
autoconf

00:01:57

passed #10676
docker
cmake

00:00:39