Log Message:
caddy: update to 2.8.4

v2.8.2

A few more fixes of reported bugs related to ARI, try_files with the root path
(/), and Caddyfile adapter detection on the CLI. See 2.8.0 release notes for
details on 2.8.

v2.8.4

Hotfix for the Caddyfile detection regression in v2.8.2. The v2.8.3 tag was
mistakenly made on the wrong commit and is skipped.