Bump net-imap from 0.4.12 to 0.4.19 (#731)

Bumps [net-imap](https://github.com/ruby/net-imap) from 0.4.12 to 0.4.19.
- [Release notes](https://github.com/ruby/net-imap/releases)
- [Commits](ruby/net-imap@v0.4.12...v0.4.19)

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

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

Author: dependabot[bot]

Gemfile.lock

@@ -122,7 +122,7 @@ GEM
     crass (1.0.6)
     cssbundling-rails (1.4.1)
       railties (>= 6.0.0)
-    date (3.3.4)
+    date (3.4.1)
     drb (2.2.1)
     erubi (1.13.0)
     execjs (2.9.1)
@@ -190,7 +190,7 @@ GEM
     msgpack (1.7.2)
     mutex_m (0.3.0)
     mysql2 (0.5.6)
-    net-imap (0.4.12)
+    net-imap (0.4.19)
       date
       net-protocol
     net-pop (0.1.2)
@@ -345,7 +345,7 @@ 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)