chore(main): release google-shopping-merchant-products 0.4.0 (#33421)

* chore(main): release google-shopping-merchant-products 0.4.0

* chore: combine duplicate Ruby 4.0 release notes

---------

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
Co-authored-by: Yoshi Automation Bot <yoshi-automation@google.com>

Author: release-please[bot]

.release-please-manifest.json

@@ -1009,7 +1009,7 @@
   "google-shopping-merchant-order_tracking-v1+FILLER": "0.0.0",
   "google-shopping-merchant-order_tracking-v1beta": "0.2.1",
   "google-shopping-merchant-order_tracking-v1beta+FILLER": "0.0.0",
-  "google-shopping-merchant-products": "0.3.0",
+  "google-shopping-merchant-products": "0.4.0",
   "google-shopping-merchant-products+FILLER": "0.0.0",
   "google-shopping-merchant-products-v1": "0.4.1",
   "google-shopping-merchant-products-v1+FILLER": "0.0.0",

google-shopping-merchant-products/CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+### 0.4.0 (2026-03-31)
+
+#### Features
+
+* Upgrade dependencies for Ruby v4.0 and drop Ruby v3.1 support
+
 ### 0.3.0 (2025-11-21)
 
 #### Features

google-shopping-merchant-products/lib/google/shopping/merchant/products/version.rb

@@ -21,7 +21,7 @@ module Google
   module Shopping
     module Merchant
       module Products
-        VERSION = "0.3.0"
+        VERSION = "0.4.0"
       end
     end
   end