VOL-2630 Release voltha-simolt-adapter 2.2.3

Change-Id: I66de66a34e84fa18b743fd7fe5e09ed2d36e3b0f
diff --git a/docker/Dockerfile.simulated_olt b/docker/Dockerfile.simulated_olt
index fd3ca86..4d67800 100644
--- a/docker/Dockerfile.simulated_olt
+++ b/docker/Dockerfile.simulated_olt
@@ -20,7 +20,7 @@
 # Install required packages
 RUN apk add --no-cache \
         wget=1.20.3-r0 \
-        git=2.20.1-r0 \
+        git=2.20.2-r0 \
         make=4.2.1-r2 \
         build-base=0.5-r1 \
         protobuf=3.6.1-r1 \