feat(tools): upgrade go to 1.16.3 in Fabric 1.4.x AIO image

This was initially a candidate for resolving the issue of #914 but
later that idea turned out to not work.
At the end of the day we always thrive to work with the latest and
greatest of all of our dependencies CVEs permitting so the upgrade
can stay in as a valid change.

Signed-off-by: Peter Somogyvari <peter.somogyvari@accenture.com>

tools/docker/fabric-all-in-one/Dockerfile_v1.4.x

@@ -41,8 +41,8 @@ RUN apk add --no-cache curl
 RUN apk add --no-cache file
 
 # Download and setup path variables for Go
-RUN wget https://golang.org/dl/go1.15.5.linux-amd64.tar.gz
-RUN tar -xvf go1.15.5.linux-amd64.tar.gz
+RUN wget https://golang.org/dl/go1.16.3.linux-amd64.tar.gz
+RUN tar -xvf go1.16.3.linux-amd64.tar.gz
 RUN mv go /usr/local
 ENV GOROOT=/usr/local/go
 ENV GOPATH=/usr/local/go