build(deps): bump net-imap from 0.5.11 to 0.5.12

Bumps [net-imap](https://github.com/ruby/net-imap) from 0.5.11 to 0.5.12.
- [Release notes](https://github.com/ruby/net-imap/releases)
- [Commits](ruby/net-imap@v0.5.11...v0.5.12)

---
updated-dependencies:
- dependency-name: net-imap
  dependency-version: 0.5.12
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -292,7 +292,7 @@ GEM
       uri
     net-http-persistent (4.0.6)
       connection_pool (~> 2.2, >= 2.2.4)
-    net-imap (0.5.11)
+    net-imap (0.5.12)
       date
       net-protocol
     net-pop (0.1.2)
@@ -861,7 +861,7 @@ CHECKSUMS
   nested_form_fields (0.8.4) sha256=e3db8e935b40c6b6027ce65b10ee0c5cf575d1ba175be85154c81d4253635b19
   net-http (0.6.0) sha256=9621b20c137898af9d890556848c93603716cab516dc2c89b01a38b894e259fb
   net-http-persistent (4.0.6) sha256=2abb3a04438edf6cb9e0e7e505969605f709eda3e3c5211beadd621a2c84dd5d
-  net-imap (0.5.11) sha256=761143adaf153208c49e8e9d52e1b18ce17a24dc4f7f4f367480b5b98010f221
+  net-imap (0.5.12) sha256=cb8cd05bd353fcc19b6cbc530a9cb06b577a969ea10b7ddb0f37787f74be4444
   net-pop (0.1.2) sha256=848b4e982013c15b2f0382792268763b748cce91c9e91e36b0f27ed26420dff3
   net-protocol (0.2.2) sha256=aa73e0cba6a125369de9837b8d8ef82a61849360eba0521900e2c3713aa162a8
   net-smtp (0.5.1) sha256=ed96a0af63c524fceb4b29b0d352195c30d82dd916a42f03c62a3a70e5b70736