Update dependencies

Gemfile.lock

@@ -150,7 +150,7 @@ GEM
     jbuilder (2.13.0)
       actionview (>= 5.0.0)
       activesupport (>= 5.0.0)
-    json (2.9.1)
+    json (2.10.0)
     logger (1.6.5)
     loofah (2.24.0)
       crass (~> 1.0.2)
@@ -169,7 +169,7 @@ GEM
     msgpack (1.8.0)
     net-http (0.6.0)
       uri
-    net-imap (0.5.5)
+    net-imap (0.5.6)
       date
       net-protocol
     net-pop (0.1.2)
@@ -429,7 +429,7 @@ CHECKSUMS
   io-console (0.8.0) sha256=cd6a9facbc69871d69b2cb8b926fc6ea7ef06f06e505e81a64f14a470fddefa2
   irb (1.15.1) sha256=d9bca745ac4207a8b728a52b98b766ca909b86ff1a504bcde3d6f8c84faae890
   jbuilder (2.13.0) sha256=7200a38a1c0081aa81b7a9757e7a299db75bc58cf1fd45ca7919a91627d227d6
-  json (2.9.1) sha256=d2bdef4644052fad91c1785d48263756fe32fcac08b96a20bb15840e96550d11
+  json (2.10.0) sha256=d5d52493a501f899644e067eebaef45944428a0a9adc59a8c10ebec2351d42c3
   logger (1.6.5) sha256=c3cfe56d01656490ddd103d38b8993d73d86296adebc5f58cefc9ec03741e56b
   loofah (2.24.0) sha256=61e6a710883abb8210887f3dc868cf3ed66594c509d9ff6987621efa6651ee1e
   mail (2.8.1) sha256=ec3b9fadcf2b3755c78785cb17bc9a0ca9ee9857108a64b6f5cfc9c0b5bfc9ad
@@ -440,7 +440,7 @@ CHECKSUMS
   mocha (2.7.1) sha256=8f7d538d5d3ebc75fc788b3d92fbab913a93a78462d2a3ce99d1bdde7af7f851
   msgpack (1.8.0) sha256=e64ce0212000d016809f5048b48eb3a65ffb169db22238fb4b72472fecb2d732
   net-http (0.6.0) sha256=9621b20c137898af9d890556848c93603716cab516dc2c89b01a38b894e259fb
-  net-imap (0.5.5) sha256=abe6a8932c68269804b0f0b499a0d1972098e7e6b8b61a7c508b127ebde1682a
+  net-imap (0.5.6) sha256=1ede8048ee688a14206060bf37a716d18cb6ea00855f6c9b15daee97ee51fbe5
   net-pop (0.1.2) sha256=848b4e982013c15b2f0382792268763b748cce91c9e91e36b0f27ed26420dff3
   net-protocol (0.2.2) sha256=aa73e0cba6a125369de9837b8d8ef82a61849360eba0521900e2c3713aa162a8
   net-smtp (0.5.1) sha256=ed96a0af63c524fceb4b29b0d352195c30d82dd916a42f03c62a3a70e5b70736