Bump net-imap from 0.5.2 to 0.5.3

Bumps [net-imap](https://github.com/ruby/net-imap) from 0.5.2 to 0.5.3.
- [Release notes](https://github.com/ruby/net-imap/releases)
- [Commits](ruby/net-imap@v0.5.2...v0.5.3)

---
updated-dependencies:
- dependency-name: net-imap
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Gemfile.lock

@@ -148,7 +148,7 @@ GEM
     mini_portile2 (2.8.8)
     minitest (5.25.4)
     msgpack (1.7.5)
-    net-imap (0.5.2)
+    net-imap (0.5.3)
       date
       net-protocol
     net-pop (0.1.2)
@@ -437,7 +437,7 @@ CHECKSUMS
   mini_portile2 (2.8.8) sha256=8e47136cdac04ce81750bb6c09733b37895bf06962554e4b4056d78168d70a75
   minitest (5.25.4) sha256=9cf2cae25ac4dfc90c988ebc3b917f53c054978b673273da1bd20bcb0778f947
   msgpack (1.7.5) sha256=ffb04979f51e6406823c03abe50e1da2c825c55a37dee138518cdd09d9d3aea8
-  net-imap (0.5.2) sha256=e955b55e539712518bdb4eb747c6514f9c8d56ec4eb8eb573a82a6885a9effea
+  net-imap (0.5.3) sha256=ed19d6dc682ff287a825032e75437d30f48bd7b77aa54c4ccf7921a4d12d4ce0
   net-pop (0.1.2) sha256=848b4e982013c15b2f0382792268763b748cce91c9e91e36b0f27ed26420dff3
   net-protocol (0.2.2) sha256=aa73e0cba6a125369de9837b8d8ef82a61849360eba0521900e2c3713aa162a8
   net-scp (4.0.0) sha256=b32ded0d48c88ce70844a063e4e14efb44a95e51a9e0c0bfb0c54b4313b622ea