Bump mail from 2.7.1 to 2.8.0

Bumps [mail](https://github.com/mikel/mail) from 2.7.1 to 2.8.0.
- [Release notes](https://github.com/mikel/mail/releases)
- [Changelog](https://github.com/mikel/mail/blob/2.8.0/CHANGELOG.rdoc)
- [Commits](mikel/mail@2.7.1...2.8.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

Gemfile

@@ -7,7 +7,7 @@ ruby '2.6.5'
 gem 'haml', '~> 6.0'
 gem 'iso-639', '~> 0.3.6'
 gem 'json', '~> 2.6'
-gem 'mail', '~> 2.7'
+gem 'mail', '~> 2.8'
 gem 'mime-types', '~> 3.4'
 gem 'nokogiri', '~> 1.13'
 gem 'redis-namespace', '~> 1.9'

Gemfile.lock

@@ -25,15 +25,26 @@ GEM
     iso-639 (0.3.6)
     json (2.6.2)
     kgio (2.11.4)
-    mail (2.7.1)
+    mail (2.8.0)
       mini_mime (>= 0.1.1)
+      net-imap
+      net-pop
+      net-smtp
     mime-types (3.4.1)
       mime-types-data (~> 3.2015)
     mime-types-data (3.2021.1115)
-    mini_mime (1.0.2)
+    mini_mime (1.1.2)
     mini_portile2 (2.8.0)
     mustermann (3.0.0)
       ruby2_keywords (~> 0.0.1)
+    net-imap (0.3.1)
+      net-protocol
+    net-pop (0.1.2)
+      net-protocol
+    net-protocol (0.1.3)
+      timeout
+    net-smtp (0.3.3)
+      net-protocol
     netrc (0.11.0)
     nokogiri (1.13.9)
       mini_portile2 (~> 2.8.0)
@@ -96,6 +107,7 @@ GEM
     thor (1.2.1)
     tilt (2.0.11)
     timecop (0.9.6)
+    timeout (0.3.0)
     tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
     unf (0.1.4)
@@ -116,7 +128,7 @@ DEPENDENCIES
   haml (~> 6.0)
   iso-639 (~> 0.3.6)
   json (~> 2.6)
-  mail (~> 2.7)
+  mail (~> 2.8)
   mime-types (~> 3.4)
   nokogiri (~> 1.13)
   rack-test (~> 2.0)