chore: release spanner 1.19.0 (#4047)

diff --git a/spanner/CHANGES.md b/spanner/CHANGES.md
index 8ed5978..00f2174 100644
--- a/spanner/CHANGES.md
+++ b/spanner/CHANGES.md
@@ -1,5 +1,22 @@
 # Changes
 
+## [1.19.0](https://www.github.com/googleapis/google-cloud-go/compare/spanner/v1.18.0...spanner/v1.19.0) (2021-06-03)
+
+
+### Features
+
+* **spanner/spannertest:** support multiple aggregations ([#3965](https://www.github.com/googleapis/google-cloud-go/issues/3965)) ([1265dc3](https://www.github.com/googleapis/google-cloud-go/commit/1265dc3289693f79fcb9c5785a424eb510a50007))
+* **spanner/spansql:** case insensitive parsing of keywords and functions ([#4034](https://www.github.com/googleapis/google-cloud-go/issues/4034)) ([ddb09d2](https://www.github.com/googleapis/google-cloud-go/commit/ddb09d22a737deea0d0a9ab58cd5d337164bbbfe))
+* **spanner:** add a database name getter to client ([#4190](https://www.github.com/googleapis/google-cloud-go/issues/4190)) ([7fce29a](https://www.github.com/googleapis/google-cloud-go/commit/7fce29af404f0623b483ca6d6f2af4c726105fa6))
+* **spanner:** add custom instance config to tests ([#4194](https://www.github.com/googleapis/google-cloud-go/issues/4194)) ([e935345](https://www.github.com/googleapis/google-cloud-go/commit/e9353451237e658bde2e41b30e8270fbc5987b39))
+
+
+### Bug Fixes
+
+* **spanner:** add missing NUMERIC type to the doc for Row ([#4116](https://www.github.com/googleapis/google-cloud-go/issues/4116)) ([9a3b416](https://www.github.com/googleapis/google-cloud-go/commit/9a3b416221f3c8b3793837e2a459b1d7cd9c479f))
+* **spanner:** indent code example for Encoder and Decoder ([#4128](https://www.github.com/googleapis/google-cloud-go/issues/4128)) ([7c1f48f](https://www.github.com/googleapis/google-cloud-go/commit/7c1f48f307284c26c10cd5787dbc94136a2a36a6))
+* **spanner:** mark SessionPoolConfig.MaxBurst deprecated ([#4115](https://www.github.com/googleapis/google-cloud-go/issues/4115)) ([d60a686](https://www.github.com/googleapis/google-cloud-go/commit/d60a68649f85f1edfbd8f11673bb280813c2b771))
+
 ## [1.18.0](https://www.github.com/googleapis/google-cloud-go/compare/spanner/v1.17.0...spanner/v1.18.0) (2021-04-29)