Bump net-imap from 0.5.4 to 0.5.5

Bumps [net-imap](https://github.com/ruby/net-imap) from 0.5.4 to 0.5.5.
- [Release notes](https://github.com/ruby/net-imap/releases)
- [Commits](ruby/net-imap@v0.5.4...v0.5.5)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -272,7 +272,7 @@ GEM
       rails (>= 3.2.0)
     net-http (0.6.0)
       uri
-    net-imap (0.5.4)
+    net-imap (0.5.5)
       date
       net-protocol
     net-pop (0.1.2)
@@ -777,7 +777,7 @@ CHECKSUMS
   nested_form (0.3.2) sha256=b1c468d7eac781235861c2f74fc9f675df0c4d915d5724aaf7fd29f7891c0538
   nested_form_fields (0.8.4) sha256=e3db8e935b40c6b6027ce65b10ee0c5cf575d1ba175be85154c81d4253635b19
   net-http (0.6.0) sha256=9621b20c137898af9d890556848c93603716cab516dc2c89b01a38b894e259fb
-  net-imap (0.5.4) sha256=b665d23a4eeea6af725a9bda0e3dbb65f06b7907e7a3986c1bbcc5d09444599d
+  net-imap (0.5.5) sha256=abe6a8932c68269804b0f0b499a0d1972098e7e6b8b61a7c508b127ebde1682a
   net-pop (0.1.2) sha256=848b4e982013c15b2f0382792268763b748cce91c9e91e36b0f27ed26420dff3
   net-protocol (0.2.2) sha256=aa73e0cba6a125369de9837b8d8ef82a61849360eba0521900e2c3713aa162a8
   net-smtp (0.5.0) sha256=5fc0415e6ea1cc0b3dfea7270438ec22b278ca8d524986a3ae4e5ae8d087b42a