fix version to 2.27.2-SNAPSHOT

Author: cindy-peng

pom.xml

@@ -179,12 +179,12 @@
       <dependency>
         <groupId>com.google.api.grpc</groupId>
         <artifactId>grpc-google-cloud-datastore-v1</artifactId>
-        <version>2.26.4-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-datastore-v1:current} -->
+        <version>2.27.2-SNAPSHOT</version><!-- {x-version-update:grpc-google-cloud-datastore-v1:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-datastore-utils</artifactId>
-        <version>2.26.4-SNAPSHOT</version><!-- {x-version-update:google-cloud-datastore-utils:current} -->
+        <version>2.27.2-SNAPSHOT</version><!-- {x-version-update:google-cloud-datastore-utils:current} -->
       </dependency>
       <dependency>
         <groupId>com.google.cloud.datastore</groupId>