add release notes for 2.0.6 (#752)

CHANGELOG.adoc

@@ -5,14 +5,40 @@ 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.
 
-== 2.0.6.BUILD-SNAPSHOT
+== 2.0.7.BUILD-SNAPSHOT
+
+
+== 2.0.6
+
+=== General
+
+* Updated `gcp-libraries-bom.version` to 24.0.0.
+
+=== Datastore
+* Added Blob to byte[] conversion on read (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/729[#729]).
+* Removed unused array input handling logic in `TwoStepsConversions` (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/733[#733]).
+
+=== Logging
+* Fixed potential NPE for a null message in `StackdriverJsonLayout` (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/694[#694]).
+
 
 === Pub/Sub
 
 * Added support for per-subscription configurations for Subscriber settings. (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/issues/418[#418]).
 ** A global custom bean for a setting takes precedence over any property-based auto-configuration.
 In order to use per-subscription configuration for a Subscriber setting, the custom bean for that setting needs to be removed.
 When using auto-configuration, per-subscription configuration takes precedence over global configuration.
+* Added a health indicator validating for each subscription that there was a recent successfully processed message or that the backlog is under threshold. (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/613[#613]).
+
+=== Spanner
+* Added Spanner health indicator (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/643[#643]).
+
+=== Trace
+* Exposed `spring.cloud.gcp.trace.server-response-timeout-ms` property (https://github.com/GoogleCloudPlatform/spring-cloud-gcp/pull/698[#698]).
+
+
+Thanks to our community contributors: @gkatzioura, @ikeyat, @mirehasfun and @mvpzone!
+
 
 == 2.0.5 (2021-10-25)