chore(deps): update dependency net-imap to v0.6.7 (#7193)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

Gemfile.lock

@@ -316,7 +316,7 @@ GEM
       bigdecimal (>= 3.1, < 5)
     net-http (0.9.1)
       uri (>= 0.11.1)
-    net-imap (0.6.6)
+    net-imap (0.6.7)
       date
       net-protocol
     net-pop (0.1.2)