chore(deps): bump net-imap from 0.5.1 to 0.5.6 (#1572)

Bumps [net-imap](https://github.com/ruby/net-imap) from 0.5.1 to 0.5.6.
- [Release notes](https://github.com/ruby/net-imap/releases)
- [Commits](ruby/net-imap@v0.5.1...v0.5.6)

---
updated-dependencies:
- dependency-name: net-imap
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -237,7 +237,7 @@ GEM
     msgpack (1.4.2)
     multi_xml (0.6.0)
     multipart-post (2.1.1)
-    net-imap (0.5.1)
+    net-imap (0.5.6)
       date
       net-protocol
     net-pop (0.1.2)
@@ -414,7 +414,7 @@ GEM
       climate_control (>= 0.0.3, < 1.0)
     thor (1.3.2)
     tilt (2.0.10)
-    timeout (0.4.2)
+    timeout (0.4.3)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     uglifier (4.2.0)