[VOL-4931] openoltAdapter: memory leak seen in long term tests

Change-Id: Ieb60bd9b4bdf88fc22a3b6704854591c0c30717d
diff --git a/go.sum b/go.sum
index 8057192..ae47da0 100644
--- a/go.sum
+++ b/go.sum
@@ -198,8 +198,8 @@
 github.com/onsi/gomega v1.10.3/go.mod h1:V9xEwhxec5O8UDM77eCW8vLymOMltsqPVYWrpDsH8xc=
 github.com/onsi/gomega v1.14.0 h1:ep6kpPVwmr/nTbklSx2nrLNSIO62DoYAhnPNIMhK8gI=
 github.com/onsi/gomega v1.14.0/go.mod h1:cIuvLEne0aoVhAgh/O6ac0Op8WWw9H6eYCriF+tEHG0=
-github.com/opencord/voltha-lib-go/v7 v7.3.2 h1:mvQE+HTf3sLXIMulkDQJbbR67lIaV/Y6IIj1co0vrhU=
-github.com/opencord/voltha-lib-go/v7 v7.3.2/go.mod h1:3XnWQBHALGZTm5n3j401zKGG9aL2UqSU3/owGwNmcxM=
+github.com/opencord/voltha-lib-go/v7 v7.4.1 h1:8tLKwQMOxkBb2vvKtDfUx8uoD2p2lkogwxJDd/PFaIA=
+github.com/opencord/voltha-lib-go/v7 v7.4.1/go.mod h1:3XnWQBHALGZTm5n3j401zKGG9aL2UqSU3/owGwNmcxM=
 github.com/opencord/voltha-protos/v5 v5.3.8 h1:tL8I1wtOfuMnKMQvgN1Ul+8YL/LTBm0PpNuxU1usGDw=
 github.com/opencord/voltha-protos/v5 v5.3.8/go.mod h1:ZGcyW79kQKIo7AySo1LRu613E6uiozixrCF0yNB/4x8=
 github.com/opentracing/opentracing-go v1.1.0/go.mod h1:UkNAQd3GIcIGf0SeVgPpRdFStlNbqXla1AfSYxPUl2o=