build(deps): bump net-imap from 0.5.1 to 0.5.5

Bumps [net-imap](https://github.com/ruby/net-imap) from 0.5.1 to 0.5.5.
- [Release notes](https://github.com/ruby/net-imap/releases)
- [Commits](ruby/net-imap@v0.5.1...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

@@ -315,7 +315,7 @@ GEM
     multipart-post (2.4.1)
     net-http-persistent (4.0.4)
       connection_pool (~> 2.2)
-    net-imap (0.5.1)
+    net-imap (0.5.5)
       date
       net-protocol
     net-pop (0.1.2)
@@ -553,7 +553,7 @@ GEM
     strong_migrations (2.1.0)
       activerecord (>= 6.1)
     thor (1.3.2)
-    timeout (0.4.2)
+    timeout (0.4.3)
     traceroute (0.8.1)
       rails (>= 3.0.0)
     turbo-rails (2.0.11)