Bump net-imap from 0.5.0 to 0.5.6

Bumps [net-imap](https://github.com/ruby/net-imap) from 0.5.0 to 0.5.6.
- [Release notes](https://github.com/ruby/net-imap/releases)
- [Commits](ruby/net-imap@v0.5.0...v0.5.6)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -109,7 +109,7 @@ GEM
       ostruct
     connection_pool (2.4.1)
     crass (1.0.6)
-    date (3.3.4)
+    date (3.4.1)
     debug (1.9.2)
       irb (~> 1.10)
       reline (>= 0.3.8)
@@ -261,7 +261,7 @@ GEM
     mysql2 (0.5.6)
     net-http (0.4.1)
       uri
-    net-imap (0.5.0)
+    net-imap (0.5.6)
       date
       net-protocol
     net-pop (0.1.2)
@@ -450,7 +450,7 @@ GEM
     temple (0.10.3)
     thor (1.3.2)
     tilt (2.3.0)
-    timeout (0.4.1)
+    timeout (0.4.3)
     turbo-rails (2.0.11)
       actionpack (>= 6.0.0)
       railties (>= 6.0.0)