chore(main): release google-cloud-billing 1.7.0 (#32992)

* chore(main): release google-cloud-billing 1.7.0

* 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

@@ -177,7 +177,7 @@
   "google-cloud-bigtable-admin-v2+FILLER": "0.0.0",
   "google-cloud-bigtable-v2": "1.11.0",
   "google-cloud-bigtable-v2+FILLER": "0.0.0",
-  "google-cloud-billing": "1.6.2",
+  "google-cloud-billing": "1.7.0",
   "google-cloud-billing+FILLER": "0.0.0",
   "google-cloud-billing-budgets": "3.1.0",
   "google-cloud-billing-budgets+FILLER": "0.0.0",

google-cloud-billing/CHANGELOG.md

@@ -1,5 +1,11 @@
 # Release History
 
+### 1.7.0 (2026-03-19)
+
+#### Features
+
+* Upgrade dependencies for Ruby v4.0 and drop Ruby v3.1 support
+
 ### 1.6.2 (2025-09-12)
 
 #### Documentation

google-cloud-billing/lib/google/cloud/billing/version.rb

@@ -16,7 +16,7 @@
 module Google
   module Cloud
     module Billing
-      VERSION = "1.6.2".freeze
+      VERSION = "1.7.0".freeze
     end
   end
 end