fix(deps): update grpc-java monorepo to v1.68.1

Author: renovate[bot]

build.gradle

@@ -10,7 +10,7 @@ allprojects {
 }
 
 ext {
-    grpcVersion = '1.68.0'
+    grpcVersion = '1.68.1'
     protobufVersion = '3.25.5'
 }