Bump net-smtp from 0.3.3 to 0.5.0

Bumps [net-smtp](https://github.com/ruby/net-smtp) from 0.3.3 to 0.5.0.
- [Release notes](https://github.com/ruby/net-smtp/releases)
- [Changelog](https://github.com/ruby/net-smtp/blob/master/NEWS.md)
- [Commits](ruby/net-smtp@v0.3.3...v0.5.0)

---
updated-dependencies:
- dependency-name: net-smtp
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Gemfile.lock

@@ -136,9 +136,9 @@ GEM
       net-protocol
     net-pop (0.1.2)
       net-protocol
-    net-protocol (0.2.1)
+    net-protocol (0.2.2)
       timeout
-    net-smtp (0.3.3)
+    net-smtp (0.5.0)
       net-protocol
     nio4r (2.5.9)
     nokogiri (1.15.2)
@@ -228,7 +228,7 @@ GEM
     sqlite3 (1.6.3-x86_64-darwin)
     sqlite3 (1.6.3-x86_64-linux)
     thor (1.2.2)
-    timeout (0.3.2)
+    timeout (0.4.1)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.4.2)