chore(main): release spanner 1.94.0

Author: release-please[bot]

.release-please-individual-manifest.json

@@ -10,7 +10,7 @@
   "pubsub": "1.51.0",
   "pubsub/v2": "2.6.1",
   "pubsublite": "1.10.0",
-  "spanner": "1.93.0",
+  "spanner": "1.94.0",
   "storage": "1.63.1",
   "vertexai": "0.19.0"
 }

librarian.yaml

@@ -1301,7 +1301,7 @@ libraries:
           import_path: shopping/type
           proto_only: true
   - name: spanner
-    version: 1.93.0
+    version: 1.94.0
     apis:
       - path: google/spanner/v1
         go:

spanner/CHANGES.md

@@ -1,5 +1,17 @@
 # Changes
 
+## [1.94.0](https://github.com/googleapis/google-cloud-go/compare/spanner/v1.93.0...spanner/v1.94.0) (2026-07-21)
+
+
+### Features
+
+* **spanner:** Implement OPAQUE login authentication for Spanner Omni ([#20085](https://github.com/googleapis/google-cloud-go/issues/20085)) ([1c073b8](https://github.com/googleapis/google-cloud-go/commit/1c073b89998e4cd73e479a8f1c33eb4c5625d944))
+
+
+### Bug Fixes
+
+* **spanner/spannertest:** Add support for UUID column type ([#20164](https://github.com/googleapis/google-cloud-go/issues/20164)) ([bbfeb3f](https://github.com/googleapis/google-cloud-go/commit/bbfeb3fce4da59af018f8f4089e984b76f207a6e))
+
 ## [1.93.0](https://github.com/googleapis/google-cloud-go/compare/spanner/v1.92.0...spanner/v1.93.0) (2026-07-15)