fix default build tags inclusion

[mohammed90]

Fixes #212

[steffenbusch]

👍 works for me:

go install github.com/caddyserver/xcaddy/cmd/xcaddy@fix-tags
...
2024/11/05 23:23:49 [INFO] exec (timeout=0s): /usr/local/go/bin/go build -o /root/out/caddy_2024-11-05_232157 -ldflags -w -s -trimpath -tags nobadger,nomysql,nopgx
2024/11/05 23:24:44 [INFO] Build complete: /root/out/caddy_2024-11-05_232157
2024/11/05 23:24:44 [INFO] Cleaning up temporary folder: /tmp/buildenv_2024-11-05-2323.1140773682

[dunglas]

Sorry, thanks!