chore(deps): update dependency com.google.cloud:google-cloud-datastore to v2.6.0 (#758)

* chore(deps): update dependency com.google.cloud:google-cloud-datastore to v2.6.0

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README.md

@@ -41,7 +41,7 @@ If you are using Maven without BOM, add this to your dependencies:
 <dependency>
   <groupId>com.google.cloud</groupId>
   <artifactId>google-cloud-datastore</artifactId>
-  <version>2.5.1</version>
+  <version>2.6.0</version>
 </dependency>
 
 ```

samples/install-without-bom/pom.xml

@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-datastore</artifactId>
-      <version>2.5.1</version>
+      <version>2.6.0</version>
     </dependency>
     <!-- [END datastore_install_without_bom] -->
 

samples/snapshot/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-datastore</artifactId>
-      <version>2.5.1</version>
+      <version>2.6.0</version>
     </dependency>
 
     <dependency>