[ change ] Prevent WASM build from being triggered almost everytime

Author: banacorn

.github/workflows/wasm.yaml

@@ -2,11 +2,11 @@ name: Compile WASM
 
 on:
   push:
-    branches: [master, ci-*, ci]
+    branches: [wasm]
     tags:
       - 'v*' # Push events to matching v*, i.e. v1.0, v20.15.10
   pull_request:
-    branches: [master]
+    branches: [wasm]
 
 env:
   GHC_WASM_META_FLAVOUR: '9.10'