fix: replace Sites.First with Sites.Default (#36)

Bump minimal Hugo version to 0.127.0

Author: razonyang

config.toml

@@ -1,5 +1,6 @@
 [module.hugoVersion]
 extended = true
+min = "0.127.0"
 
 [[module.imports]]
 path = "github.com/hugomods/snackbar"

layouts/partials/code-block-panel/assets/js-resource.html

@@ -23,7 +23,7 @@
 {{- $params := merge $defaults .Site.Params.code_block_panel (dict
   "icons" $icons
   "i18n" $i18n.Values
-  "defaultLang" $sites.First.Language.Lang)
+  "defaultLang" $sites.Default.Language.Lang)
 }}
 {{- $options := dict
   "params" $params