ci : add ignore for bindings/{ruby, go} in build.yml [no ci] (#3837)

This commit adds an ignore for bindings-ruby and bindings-go in
build.yml as these are handled by separate .yml file (separate jobs)
and don't need to trigger a full CI build.

.github/workflows/build.yml

@@ -28,6 +28,9 @@ on:
 
   pull_request:
     types: [opened, synchronize, reopened]
+    paths-ignore:
+      - 'bindings/ruby/**' # handled by bindings-ruby.yml
+      - 'bindings/go/**'   # handled by bindings-go.yml
   workflow_dispatch:
     inputs:
       create_release: