build(deps): bump codecov/codecov-action from 4 to 6

Bumps [codecov/codecov-action](https://github.com/codecov/codecov-action) from 4 to 6.
- [Release notes](https://github.com/codecov/codecov-action/releases)
- [Changelog](https://github.com/codecov/codecov-action/blob/main/CHANGELOG.md)
- [Commits](https://github.com/codecov/codecov-action/compare/v4...v6)

---
updated-dependencies:
- dependency-name: codecov/codecov-action
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/rust.yml

@@ -108,7 +108,7 @@ jobs:
       - name: Aggregate reports
         run: cargo llvm-cov --no-run --lcov --output-path lcov.info
       - name: Upload coverage to Codecov (main)
-        uses: codecov/codecov-action@v4
+        uses: codecov/codecov-action@v6
         with:
           files: lcov.info
           fail_ci_if_error: true

example_configs/stalwart.md

@@ -48,3 +48,13 @@ To integrate with LLDAP,
       allow-invalid-certs = true
       enable = false
 ```
+
+## Email alias
+If you want to enable [email aliases](https://stalw.art/docs/mta/inbound/rcpt/#catch-all-addresses), you have to create a new *User-defined attribute* under *User schema* of type string. Currently, LLDAP doesn't support multi-value filters. If you want multiple aliases, you will have to create multiple attributes (`mailAlias1`, `mailAlias2`, ..., `mailAliasN`), where `N` is the maximum number of aliases an account will have.
+
+You also need to change your ldap filter for emails.
+```toml
+[directory.ldap.filter]
+# Add one clause per alias attribute you created (example: mailAlias1..mailAlias3)
+email = "(&(objectclass=person)(|(mail=?)(mailAlias1=?)(mailAlias2=?)(mailAlias3=?)))"
+```