Remove ethernet branch from build

.github/workflows/CrossBuild.yml

@@ -2,9 +2,9 @@
 name: Cross-Build
 on:
   push:
-    branches-ignore: [ master ]
+    branches-ignore: [ master ethernet_idf4.3 ]
   pull_request:
-    branches-ignore: [ master ]
+    branches-ignore: [ master ethernet_idf4.3 ]
 
 jobs:
   job1: