Update Rust crate lettre to 0.11.18

geneit_backend/Cargo.lock

@@ -2181,9 +2181,9 @@ checksum = "03087c2bad5e1034e8cace5926dec053fb3790248370865f5117a7d0213354c8"
 
 [[package]]
 name = "lettre"
-version = "0.11.17"
+version = "0.11.18"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cb2a0354e9ece2fcdcf9fa53417f6de587230c0c248068eb058fa26c4a753179"
+checksum = "5cb54db6ff7a89efac87dba5baeac57bb9ccd726b49a9b6f21fb92b3966aaf56"
 dependencies = [
  "base64",
  "chumsky",
@@ -2199,7 +2199,7 @@ dependencies = [
  "nom 8.0.0",
  "percent-encoding",
  "quoted_printable",
- "socket2 0.5.8",
+ "socket2 0.6.0",
  "tokio",
  "url",
 ]