deps: update dependency io.grpc:grpc-bom to v1.66.0

Author: renovate[bot]

pom.xml

@@ -65,7 +65,7 @@
     <site.installationModule>google-iam-parent</site.installationModule>
     <protobuf.version>3.21.5</protobuf.version>
     <junit.version>4.13.2</junit.version>
-    <grpc.version>1.47.0</grpc.version>
+    <grpc.version>1.66.0</grpc.version>
     <guava.version>31.0.1-android</guava.version>
   </properties>