Update mdns version.

Was fixed to 1.2.1 before, because of a bug in 1.2.2

Author: me-no-dev

Diff for: idf_component.yml

@@ -44,7 +44,7 @@ files:
 dependencies:
   idf: ">=5.1"
   # mdns 1.2.1 is necessary to build H2 with no WiFi
-  mdns: "1.2.1"
+  mdns: "^1.2.3"
   chmorgan/esp-libhelix-mp3:
     version: "1.0.3"
     require: public