chore(sonar): add network.go to exclusion

it was copied over from cosmos-sdk.

Signed-off-by: Julian Strobl <jmastr@mailbox.org>

sonar-project.properties

@@ -1,2 +1,2 @@
 sonar.projectKey=planetmint_planetmint-go_AYjnSLNdwwdSy162QoXI
-sonar.exclusions=docs/static/openapi.yml,x/**/*.pb.go,x/**/*.pb.gw.go,x/**/module.go,x/**/types/genesis_test.go,x/**/types/params.go,x/**/client/cli/query_params.go,tests/e2e/**/suite.go,app/simulation_test.go,x/**/client/cli/tx_update_params.go,x/**/types/message_update_params_test.go,x/**/keeper/message_server_update_params.go,x/**/types/message*test.go,x/**/module_simulation.go,x/**/simulation/*.go
+sonar.exclusions=docs/static/openapi.yml,x/**/*.pb.go,x/**/*.pb.gw.go,x/**/module.go,x/**/types/genesis_test.go,x/**/types/params.go,x/**/client/cli/query_params.go,tests/e2e/**/suite.go,app/simulation_test.go,x/**/client/cli/tx_update_params.go,x/**/types/message_update_params_test.go,x/**/keeper/message_server_update_params.go,x/**/types/message*test.go,x/**/module_simulation.go,x/**/simulation/*.go,testutil/network/network.go