chore: release 2.2.6 (googleapis#527)

🤖 I have created a release \*beep\* \*boop\*
---
### [2.2.6](https://www.github.com/googleapis/java-spanner-jdbc/compare/v2.2.5...v2.2.6) (2021-07-06)


### Dependencies

* update dependency com.google.cloud:google-cloud-spanner-bom to v6.9.1 ([googleapis#525](https://www.github.com/googleapis/java-spanner-jdbc/issues/525)) ([37023b8](https://www.github.com/googleapis/java-spanner-jdbc/commit/37023b8295c97304aa0a55a28f71905fcbf5b93f))
---


This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

CHANGELOG.md

@@ -1,5 +1,12 @@
 # Changelog
 
+### [2.2.6](https://www.github.com/googleapis/java-spanner-jdbc/compare/v2.2.5...v2.2.6) (2021-07-06)
+
+
+### Dependencies
+
+* update dependency com.google.cloud:google-cloud-spanner-bom to v6.9.1 ([#525](https://www.github.com/googleapis/java-spanner-jdbc/issues/525)) ([37023b8](https://www.github.com/googleapis/java-spanner-jdbc/commit/37023b8295c97304aa0a55a28f71905fcbf5b93f))
+
 ### [2.2.5](https://www.github.com/googleapis/java-spanner-jdbc/compare/v2.2.4...v2.2.5) (2021-07-06)
 
 

pom.xml

@@ -4,7 +4,7 @@
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <artifactId>google-cloud-spanner-jdbc</artifactId>
-  <version>2.2.6-SNAPSHOT</version><!-- {x-version-update:google-cloud-spanner-jdbc:current} -->
+  <version>2.2.6</version><!-- {x-version-update:google-cloud-spanner-jdbc:current} -->
   <packaging>jar</packaging>
   <name>Google Cloud Spanner JDBC</name>
   <url>https://github.com/googleapis/java-spanner-jdbc</url>

samples/snapshot/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-spanner-jdbc</artifactId>
-      <version>2.2.6-SNAPSHOT</version>
+      <version>2.2.6</version>
     </dependency>
     <!-- {x-version-update-end} -->
 

versions.txt

@@ -1,4 +1,4 @@
 # Format:
 # module:released-version:current-version
 
-google-cloud-spanner-jdbc:2.2.5:2.2.6-SNAPSHOT
+google-cloud-spanner-jdbc:2.2.6:2.2.6