Bump net-imap in the bundler group across 1 directory

Bumps the bundler group with 1 update in the / directory: [net-imap](https://github.com/ruby/net-imap).


Updates `net-imap` from 0.5.6 to 0.5.7
- [Release notes](https://github.com/ruby/net-imap/releases)
- [Commits](ruby/net-imap@v0.5.6...v0.5.7)

---
updated-dependencies:
- dependency-name: net-imap
  dependency-version: 0.5.7
  dependency-type: indirect
  dependency-group: bundler
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -114,7 +114,7 @@ GEM
     mini_mime (1.1.5)
     mini_portile2 (2.8.8)
     minitest (5.25.4)
-    net-imap (0.5.6)
+    net-imap (0.5.7)
       date
       net-protocol
     net-pop (0.1.2)