Add `safeHTML` to post_meta

- delimit now returns a string and not a template.HTML from hugo v0.120.0
- no impact found with min req version for Papermod
https://github.com/gohugoio/hugo/releases/tag/v0.120.0

fixes #1325

layouts/partials/post_meta.html

@@ -19,5 +19,5 @@
 {{- end }}
 
 {{- with ($scratch.Get "meta") }}
-{{- delimit . " · " -}}
+{{- delimit . " · " | safeHTML -}}
 {{- end -}}