Bump mail from 2.9.0 to 2.9.1

Bumps [mail](https://github.com/mikel/mail) from 2.9.0 to 2.9.1.
- [Release notes](https://github.com/mikel/mail/releases)
- [Changelog](https://github.com/mikel/mail/blob/master/CHANGELOG.rdoc)
- [Commits](mikel/mail@2.9.0...2.9.1)

---
updated-dependencies:
- dependency-name: mail
  dependency-version: 2.9.1
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -209,7 +209,7 @@ GEM
     loofah (2.25.2)
       crass (~> 1.0.2)
       nokogiri (>= 1.12.0)
-    mail (2.9.0)
+    mail (2.9.1)
       logger
       mini_mime (>= 0.1.1)
       net-imap
@@ -231,12 +231,12 @@ GEM
     mutex_m (0.3.0)
     net-http (0.9.1)
       uri (>= 0.11.1)
-    net-imap (0.6.4.1)
+    net-imap (0.6.6)
       date
       net-protocol
     net-pop (0.1.2)
       net-protocol
-    net-protocol (0.2.2)
+    net-protocol (0.3.0)
       timeout
     net-smtp (0.5.1)
       net-protocol
@@ -547,7 +547,7 @@ CHECKSUMS
   lint_roller (1.1.0) sha256=2c0c845b632a7d172cb849cc90c1bce937a28c5c8ccccb50dfd46a485003cc87
   logger (1.7.0) sha256=196edec7cc44b66cfb40f9755ce11b392f21f7967696af15d274dde7edff0203
   loofah (2.25.2) sha256=2007f746959ac65552456e04b433e83deb22759ab38c838b4445c70e43425918
-  mail (2.9.0) sha256=6fa6673ecd71c60c2d996260f9ee3dd387d4673b8169b502134659ece6d34941
+  mail (2.9.1) sha256=06574eca475253d6c18145dd70af80d0eb970182d55053497c5f4d797ea160e8
   marcel (1.2.1) sha256=1678e9360e32f9eafa917c80029e2f6d10b2715c66a4b87b6d0da9b9cd1f859f
   mini_mime (1.1.5) sha256=8681b7e2e4215f2a159f9400b5816d85e9d8c6c6b491e96a12797e798f8bccef
   minitest (6.0.6) sha256=153ea36d1d987a62942382b61075745042a2b3123b1cd48f4c3675af9cc7d6f1
@@ -556,9 +556,9 @@ CHECKSUMS
   minitest-reporters (1.8.0) sha256=8ce5280fb73ad3178ae525454df169b6f28c1b38b1d088ea91815d3a370ba384
   mutex_m (0.3.0) sha256=cfcb04ac16b69c4813777022fdceda24e9f798e48092a2b817eb4c0a782b0751
   net-http (0.9.1) sha256=25ba0b67c63e89df626ed8fac771d0ad24ad151a858af2cc8e6a716ca4336996
-  net-imap (0.6.4.1) sha256=29f0360d75a7efd3539f16ac1957dea5c0a51ddeceb348db4553c3120914ea0d
+  net-imap (0.6.6) sha256=96aa4ee50df3060203e649efc341f53480b791d49e150f2fdebf68beb141a8df
   net-pop (0.1.2) sha256=848b4e982013c15b2f0382792268763b748cce91c9e91e36b0f27ed26420dff3
-  net-protocol (0.2.2) sha256=aa73e0cba6a125369de9837b8d8ef82a61849360eba0521900e2c3713aa162a8
+  net-protocol (0.3.0) sha256=ba310c3d4f1cad46bb1ab20336b06669b1ff8f7c568d9cb9342b32a718547472
   net-smtp (0.5.1) sha256=ed96a0af63c524fceb4b29b0d352195c30d82dd916a42f03c62a3a70e5b70736
   netrc (0.11.0) sha256=de1ce33da8c99ab1d97871726cba75151113f117146becbe45aa85cb3dabee3f
   nio4r (2.7.5) sha256=6c90168e48fb5f8e768419c93abb94ba2b892a1d0602cb06eef16d8b7df1dca1