config: Change image cache location

hugo.toml

@@ -10,6 +10,10 @@ title                  = "Hugo"
 # We do redirects via Netlify's _redirects file, generated by Hugo (see "outputs" below).
 disableAliases = true
 
+[caches.images]
+    dir    = ":cacheDir/images"
+    maxAge = "1440h"
+
 [pagination]
     pagerSize = 100