deps: bump Spanner to 6.23.3 (#137)

* deps: bump Spanner to 6.23.3 * deps: define Spanner version once

Author: olavloite

pom.xml

@@ -23,6 +23,8 @@
  <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
 
  <excludedTests>com.google.cloud.spanner.pgadapter.IntegrationTest,com.google.cloud.spanner.pgadapter.golang.GolangTest</excludedTests>
+
+ <spanner.version>6.23.3</spanner.version>
  </properties>
 
  <modelVersion>4.0.0</modelVersion>
@@ -67,7 +69,7 @@
  <dependency>
  <groupId>com.google.cloud</groupId>
  <artifactId>google-cloud-spanner</artifactId>
- <version>6.23.1</version>
+ <version>${spanner.version}</version>
  </dependency>
  <dependency>
  <groupId>org.postgresql</groupId>
@@ -93,14 +95,14 @@
  <dependency>
  <groupId>com.google.cloud</groupId>
  <artifactId>google-cloud-spanner</artifactId>
- <version>6.23.1</version>
+ <version>${spanner.version}</version>
  <type>test-jar</type>
  <scope>test</scope>
  </dependency>
  <dependency>
  <groupId>com.google.api</groupId>
  <artifactId>gax-grpc</artifactId>
- <version>2.13.0</version>
+ <version>2.16.0</version>
  <classifier>testlib</classifier>
  <scope>test</scope>
  </dependency>