dgraph: upgrade to v20.03.2
diff --git a/apps/dgraph/Dockerfile b/apps/dgraph/Dockerfile
index ccf34db..ffdc79d 100644
--- a/apps/dgraph/Dockerfile
+++ b/apps/dgraph/Dockerfile
@@ -4,10 +4,10 @@
 ENV GO111MODULE on
 
 WORKDIR /app
-RUN wget https://github.com/dgraph-io/dgraph/archive/v20.03.1.tar.gz
-RUN tar -zxvf v20.03.1.tar.gz
+RUN wget https://github.com/dgraph-io/dgraph/archive/v20.03.2.tar.gz
+RUN tar -zxvf v20.03.2.tar.gz
 RUN mkdir -p $GOPATH/src/github.com/dgraph-io
-RUN mv dgraph-20.03.1 $GOPATH/src/github.com/dgraph-io/dgraph
+RUN mv dgraph-20.03.2 $GOPATH/src/github.com/dgraph-io/dgraph
 WORKDIR $GOPATH/src/github.com/dgraph-io/dgraph/dgraph
 RUN go get -v -d ./...