deps: update dependency com.google.cloud:google-cloud-spanner-bom to v6.4.4 (googleapis#464)

renovate-bot · web-flow · commit eeb31c050fda · 2021-05-18T14:26:10.000+10:00
diff --git a/pom.xml b/pom.xml
@@ -71,7 +71,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-spanner-bom</artifactId>
-        <version>6.4.0</version>
+        <version>6.4.4</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>
