Add release notes for 2.0.3 (#497)

CHANGELOG.adoc

@@ -5,6 +5,29 @@ https://spring.io/projects/spring-cloud-gcp[Spring Cloud GCP] is a set of integr
 This document provides a high-level overview of the changes introduced in Spring Cloud GCP by release.
 For a detailed view of what has changed, refer to the https://github.com/GoogleCloudPlatform/spring-cloud-gcp/commits/main[commit history] on GitHub.
 
+== 2.0.3 (2021-06-08)
+
+=== General
+* Upgraded to GCP Libraries BOM 20.6.0
+* Added version management for `com.google.cloud.sql:jdbc-socket-factory-core` (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/466[#466])
+
+=== Cloud Pub/Sub
+* Exposed publisher endpoint for message ordering (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/421[#421])
+* Pub/Sub Health Indicator timeout increased to 2 seconds (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/420[#420]).
+* Gated Cloud Pub/Sub emulator autoconfiguration Pub/Sub module being present and enabled (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/446[#446])
+* `PubSubMessageHandler` now passes the original message to new success/failure callbacks, allowing applications to track message publish status (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/482[#482]).
+ The old `PubSubMessageHandler.setPublishCallback()` method is now deprecated.
+
+=== Cloud Spanner
+* Stopped Cloud Spanner emulator autoconfiguration from triggering default credentials creation (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/457[#457]).
+* Added ability to customize arbitrary `SpannerOptions` settings by configuring a `SpannerOptionsCustomizer` bean (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/489[#489]).
+
+=== Cloud SQL
+* Added IAM authentication option for PostgreSQL (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/488[#488]).
+* Enabled placeholder interpretation in Cloud SQL properties (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/495[#495]).
+
+Thanks to our community contributors, @herder and @melburne!
+
 == 2.0.2 (2021-03-25)
 
 === General

docs/src/main/asciidoc/spring-integration-pubsub.adoc

@@ -265,7 +265,7 @@ If none is provided, the adapter waits indefinitely for a response.
 It is possible to set user-defined callbacks for the `publish()` call in `PubSubMessageHandler` through the `setSuccessCallback()` and `setFailureCallback()` methods (either one or both may be set).
 These give access to the Pub/Sub publish message ID in case of success, or the root cause exception in case of error.
 Both callbacks include the original message as the second argument.
-The old `setPublishFutureCallback()` method that only gave access to message ID or root cause exception is deprecated and will be removed in a future release.
+The old `setPublishCallback()` method that only gave access to message ID or root cause exception is deprecated and will be removed in a future release.
 
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