Merge pull request #451 from Bootstrap-Academy/renovate/rnwood-smtp4dev-3.x

chore(deps): update rnwood/smtp4dev docker tag to v3.10.3

Author: Defelo

.github/workflows/test.yml

@@ -83,7 +83,7 @@ jobs:
           RUST_TEST_THREADS: 1
     services:
       smtp4dev:
-        image: rnwood/smtp4dev:3.9.0
+        image: rnwood/smtp4dev:3.10.3
         env:
           ServerOptions__AuthenticationRequired: "true"
           ServerOptions__Users__0__Username: academy