Bump mail from 2.8.0.rc1 to 2.8.1 (#497)

Bumps [mail](https://github.com/mikel/mail) from 2.8.0.rc1 to 2.8.1.
- [Changelog](https://github.com/mikel/mail/blob/2.8.1/CHANGELOG.rdoc)
- [Commits](mikel/mail@2.8.0.rc1...2.8.1)

---
updated-dependencies:
- dependency-name: mail
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Gemfile

@@ -4,7 +4,7 @@ ruby File.read(File.join(File.dirname(__FILE__), '.ruby-version')).chomp
 gem 'cocoapods-core', '~> 1.11'
 gem 'dalli', '~> 3.2.8'
 gem 'json'
-gem 'mail', '~> 2.8.a', '>= 2.8.0.rc1'
+gem 'mail', '~> 2.8'
 gem 'newrelic_rpm'
 gem 'will_paginate'
 gem 'pg', '~> 1.5'

Gemfile.lock

@@ -28,7 +28,7 @@ GEM
     coderay (1.1.3)
     concurrent-ruby (1.1.10)
     dalli (3.2.8)
-    digest (3.1.0)
+    date (3.3.4)
     ethon (0.15.0)
       ffi (>= 1.15.0)
     ffi (1.15.5)
@@ -45,14 +45,14 @@ GEM
       rb-fsevent (>= 0.9.3)
       rb-inotify (>= 0.9)
       rb-kqueue (>= 0.2)
-    mail (2.8.0.rc1)
+    mail (2.8.1)
       mini_mime (>= 0.1.1)
       net-imap
       net-pop
       net-smtp
     metaclass (0.0.4)
     method_source (1.1.0)
-    mini_mime (1.1.2)
+    mini_mime (1.1.5)
     mini_portile2 (2.8.7)
     minitest (5.15.0)
     mocha (1.1.0)
@@ -63,20 +63,15 @@ GEM
     mustermann (3.0.3)
       ruby2_keywords (~> 0.0.1)
     nap (1.1.0)
-    net-imap (0.2.3)
-      digest
+    net-imap (0.4.16)
+      date
       net-protocol
-      strscan
-    net-pop (0.1.1)
-      digest
+    net-pop (0.1.2)
       net-protocol
+    net-protocol (0.2.2)
       timeout
-    net-protocol (0.1.3)
-      timeout
-    net-smtp (0.3.1)
-      digest
+    net-smtp (0.5.0)
       net-protocol
-      timeout
     netrc (0.11.0)
     newrelic_rpm (9.13.0)
     nio4r (2.7.3)
@@ -165,13 +160,13 @@ GEM
     slim (5.2.1)
       temple (~> 0.10.0)
       tilt (>= 2.1.0)
-    strscan (3.0.1)
+    strscan (3.1.0)
     temple (0.10.3)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     thread_safe (0.3.6)
     tilt (2.4.0)
-    timeout (0.2.0)
+    timeout (0.4.1)
     typhoeus (1.4.0)
       ethon (>= 0.9.0)
     tzinfo (1.2.10)
@@ -189,7 +184,7 @@ DEPENDENCIES
   foreman
   json
   kicker
-  mail (~> 2.8.a, >= 2.8.0.rc1)
+  mail (~> 2.8)
   mocha-on-bacon
   newrelic_rpm
   nokogiri (~> 1.16)