build(deps): bump net-imap from 0.5.8 to 0.5.9

Bumps [net-imap](https://github.com/ruby/net-imap) from 0.5.8 to 0.5.9.
- [Release notes](https://github.com/ruby/net-imap/releases)
- [Commits](ruby/net-imap@v0.5.8...v0.5.9)

---
updated-dependencies:
- dependency-name: net-imap
  dependency-version: 0.5.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -293,7 +293,7 @@ GEM
       uri
     net-http-persistent (4.0.6)
       connection_pool (~> 2.2, >= 2.2.4)
-    net-imap (0.5.8)
+    net-imap (0.5.9)
       date
       net-protocol
     net-pop (0.1.2)
@@ -854,7 +854,7 @@ CHECKSUMS
   nested_form_fields (0.8.4) sha256=e3db8e935b40c6b6027ce65b10ee0c5cf575d1ba175be85154c81d4253635b19
   net-http (0.6.0) sha256=9621b20c137898af9d890556848c93603716cab516dc2c89b01a38b894e259fb
   net-http-persistent (4.0.6) sha256=2abb3a04438edf6cb9e0e7e505969605f709eda3e3c5211beadd621a2c84dd5d
-  net-imap (0.5.8) sha256=52aa5fdfc1a8a3df1f793b20a327e95b5a9dfe1d733e1f0d53075d2dbcfcf593
+  net-imap (0.5.9) sha256=d95905321e1bd9f294ffc7ff8697be218eee1ec96c8504c0960964d0a0be33fc
   net-pop (0.1.2) sha256=848b4e982013c15b2f0382792268763b748cce91c9e91e36b0f27ed26420dff3
   net-protocol (0.2.2) sha256=aa73e0cba6a125369de9837b8d8ef82a61849360eba0521900e2c3713aa162a8
   net-smtp (0.5.1) sha256=ed96a0af63c524fceb4b29b0d352195c30d82dd916a42f03c62a3a70e5b70736