Bump grpc-protobuf to 1.66.0

Snyk has created this PR to upgrade io.grpc:grpc-protobuf
from 1.65.1 to 1.66.0.

https://github.com/grpc/grpc-java/releases/tag/v1.66.0

Signed-off-by: Ivan Hrasko <ivan.hrasko@pantheon.tech>
(cherry picked from commit 22deac8)

lighty-modules/lighty-gnmi/lighty-gnmi-proto/pom.xml

@@ -23,7 +23,7 @@
 
     <properties>
         <protobuf.version>3.25.3</protobuf.version>
-        <grpc.version>1.65.1</grpc.version>
+        <grpc.version>1.66.0</grpc.version>
     </properties>
 
     <dependencies>