chore(main): release google-cloud-spanner 2.36.0 (#228)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>

Author: release-please[bot]

.release-please-manifest.json

@@ -1,3 +1,3 @@
 {
-  "google-cloud-spanner": "2.35.0"
+  "google-cloud-spanner": "2.36.0"
 }

google-cloud-spanner/CHANGELOG.md

@@ -1,5 +1,14 @@
 # Release History
 
+### 2.36.0 (2026-05-08)
+
+#### Features
+
+* set txn opts at client level ([#234](https://github.com/googleapis/ruby-spanner/issues/234)) 
+#### Bug Fixes
+
+* lift up and fix circular requires ([#226](https://github.com/googleapis/ruby-spanner/issues/226)) 
+
 ### 2.35.0 (2026-02-23)
 
 #### Features

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

@@ -16,7 +16,7 @@
 module Google
   module Cloud
     module Spanner
-      VERSION = "2.35.0".freeze
+      VERSION = "2.36.0".freeze
     end
   end
 end