chore(main): release google-shopping-merchant-promotions 0.3.0 (#33422)

* chore(main): release google-shopping-merchant-promotions 0.3.0

* 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

@@ -1015,7 +1015,7 @@
   "google-shopping-merchant-products-v1+FILLER": "0.0.0",
   "google-shopping-merchant-products-v1beta": "0.9.0",
   "google-shopping-merchant-products-v1beta+FILLER": "0.0.0",
-  "google-shopping-merchant-promotions": "0.2.2",
+  "google-shopping-merchant-promotions": "0.3.0",
   "google-shopping-merchant-promotions+FILLER": "0.0.0",
   "google-shopping-merchant-promotions-v1": "0.2.1",
   "google-shopping-merchant-promotions-v1+FILLER": "0.0.0",

google-shopping-merchant-promotions/CHANGELOG.md

@@ -1,5 +1,11 @@
 # Changelog
 
+### 0.3.0 (2026-03-31)
+
+#### Features
+
+* Upgrade dependencies for Ruby v4.0 and drop Ruby v3.1 support
+
 ### 0.2.2 (2025-09-12)
 
 #### Documentation

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

@@ -21,7 +21,7 @@ module Google
   module Shopping
     module Merchant
       module Promotions
-        VERSION = "0.2.2"
+        VERSION = "0.3.0"
       end
     end
   end