Bump GRPC version to latest to address 3pp vulnerabilities

Author: jherrick-salesforce

pom.xml

@@ -32,7 +32,7 @@
         <jul.to.slf4j.version>1.7.32</jul.to.slf4j.version>
         <logback.version>1.2.13</logback.version>
         <gson.version>2.9.0</gson.version>
-        <grpc.version>1.68.0</grpc.version>
+        <grpc.version>1.71.0</grpc.version>
         <guava.version>32.0.0-jre</guava.version>
         <jackson.version>2.15.2</jackson.version>