Bump net-smtp from 0.3.1 to 0.3.2 (#2583)

Bumps [net-smtp](https://github.com/ruby/net-smtp) from 0.3.1 to 0.3.2.
- [Release notes](https://github.com/ruby/net-smtp/releases)
- [Changelog](https://github.com/ruby/net-smtp/blob/master/NEWS.md)
- [Commits](https://github.com/ruby/net-smtp/compare/v0.3.1...v0.3.2)

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

Signed-off-by: dependabot[bot] <support@github.com>

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

Gemfile.lock

@@ -45,7 +45,6 @@ GEM
     curb (1.0.1)
     daemons (1.4.1)
     diff-lcs (1.5.0)
-    digest (3.1.0)
     domain_name (0.5.20190701)
       unf (>= 0.0.5, < 1.0.0)
     em-websocket (0.5.3)
@@ -106,10 +105,8 @@ GEM
     naught (1.1.0)
     net-protocol (0.1.3)
       timeout
-    net-smtp (0.3.1)
-      digest
+    net-smtp (0.3.2)
       net-protocol
-      timeout
     netrc (0.11.0)
     nio4r (2.5.8)
     nokogiri (1.13.8-x86_64-linux)