[chore] add net-pop

Gemfile

@@ -65,6 +65,7 @@ gem 'addressable', '~> 2.8.0'
 # Needed to make rails 6.x work with ruby 3.1, can be dropped
 # after migrated to rails 7 (see https://stackoverflow.com/a/70500221)
 gem 'net-smtp', '~> 0.3.1', require: false
+gem 'net-pop', '~> 0.1.1', require: false
 
 # Remove whitespace from model input
 gem "auto_strip_attributes", "~> 2.5"

Gemfile.lock

@@ -628,6 +628,10 @@ GEM
       mustermann (>= 1.0.0)
     nap (1.1.0)
     net-ldap (0.17.0)
+    net-pop (0.1.1)
+      digest
+      net-protocol
+      timeout
     net-protocol (0.1.2)
       io-wait
       timeout
@@ -1054,6 +1058,7 @@ DEPENDENCIES
   multi_json (~> 1.15.0)
   my_page!
   net-ldap (~> 0.17.0)
+  net-pop (~> 0.1.1)
   net-smtp (~> 0.3.1)
   nokogiri (~> 1.13.4)
   oj (~> 3.13.0)