chore(main): release spanner 1.61.0 (#9691)

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
diff --git a/.release-please-manifest-individual.json b/.release-please-manifest-individual.json
index 0396f4d..e246691 100644
--- a/.release-please-manifest-individual.json
+++ b/.release-please-manifest-individual.json
@@ -11,7 +11,7 @@
   "profiler": "0.4.0",
   "pubsub": "1.37.0",
   "pubsublite": "1.8.1",
-  "spanner": "1.60.0",
+  "spanner": "1.61.0",
   "storage": "1.40.0",
   "vertexai": "0.7.1"
 }
diff --git a/spanner/CHANGES.md b/spanner/CHANGES.md
index 53496bd..a84960e 100644
--- a/spanner/CHANGES.md
+++ b/spanner/CHANGES.md
@@ -1,5 +1,22 @@
 # Changes
 
+## [1.61.0](https://github.com/googleapis/google-cloud-go/compare/spanner/v1.60.0...spanner/v1.61.0) (2024-04-30)
+
+
+### Features
+
+* **spanner/admin/instance:** Adding `EXPECTED_FULFILLMENT_PERIOD` to the indicate instance creation times (with `FULFILLMENT_PERIOD_NORMAL` or `FULFILLMENT_PERIOD_EXTENDED` ENUM) with the extended instance creation time triggered by On-Demand Capacity... ([#9693](https://github.com/googleapis/google-cloud-go/issues/9693)) ([aa93790](https://github.com/googleapis/google-cloud-go/commit/aa93790132ba830b4c97d217ef02764e2fb1b8ea))
+* **spanner/executor:** Add SessionPoolOptions, SpannerOptions protos in executor protos ([2cdc40a](https://github.com/googleapis/google-cloud-go/commit/2cdc40a0b4288f5ab5f2b2b8f5c1d6453a9c81ec))
+* **spanner:** Add support for change streams transaction exclusion option ([#9779](https://github.com/googleapis/google-cloud-go/issues/9779)) ([979ce94](https://github.com/googleapis/google-cloud-go/commit/979ce94758442b1224a78a4f3b1f5d592ab51660))
+* **spanner:** Support MultiEndpoint ([#9565](https://github.com/googleapis/google-cloud-go/issues/9565)) ([0ac0d26](https://github.com/googleapis/google-cloud-go/commit/0ac0d265abedf946b05294ef874a892b2c5d6067))
+
+
+### Bug Fixes
+
+* **spanner/test/opentelemetry/test:** Bump x/net to v0.24.0 ([ba31ed5](https://github.com/googleapis/google-cloud-go/commit/ba31ed5fda2c9664f2e1cf972469295e63deb5b4))
+* **spanner:** Bump x/net to v0.24.0 ([ba31ed5](https://github.com/googleapis/google-cloud-go/commit/ba31ed5fda2c9664f2e1cf972469295e63deb5b4))
+* **spanner:** Fix uint8 conversion ([9221c7f](https://github.com/googleapis/google-cloud-go/commit/9221c7fa12cef9d5fb7ddc92f41f1d6204971c7b))
+
 ## [1.60.0](https://github.com/googleapis/google-cloud-go/compare/spanner/v1.59.0...spanner/v1.60.0) (2024-03-19)
 
 
@@ -950,4 +967,3 @@
 
 This is the first tag to carve out spanner as its own module. See:
 https://github.com/golang/go/wiki/Modules#is-it-possible-to-add-a-module-to-a-multi-module-repository.
-
diff --git a/spanner/internal/version.go b/spanner/internal/version.go
index 3f06213..0bac1c5 100644
--- a/spanner/internal/version.go
+++ b/spanner/internal/version.go
@@ -15,4 +15,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "1.60.0"
+const Version = "1.61.0"