escape strings in feeds

Cargo.lock

@@ -566,6 +566,7 @@ dependencies = [
  "poem-openapi",
  "rusqlite",
  "tokio",
+ "xml",
 ]
 
 [[package]]
@@ -1351,3 +1352,9 @@ name = "wit-bindgen"
 version = "0.45.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5c573471f125075647d03df72e026074b7203790d41351cd6edc96f46bcccd36"
+
+[[package]]
+name = "xml"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "58a4274c410d957424a1502b21126915b45d9956b2f80a88d4f6f906af29facc"