Fix Docker Build

Update Ruby version for 2.7.3 as it is now released

Issue-ID: SDC-3546
Signed-off-by: ChrisC <christophe.closset@intl.att.com>
Change-Id: Id5daa0016943c974b13daf859d25b4358d10627a
diff --git a/base_sdc-python/Dockerfile b/base_sdc-python/Dockerfile
index 314a137..922b173 100644
--- a/base_sdc-python/Dockerfile
+++ b/base_sdc-python/Dockerfile
@@ -12,7 +12,7 @@
         libcurl \
         jq \
         bash \
-        ruby=2.7.2-r1 && \
+        ruby=2.7.3-r0 && \
     apk add --no-cache --virtual .build-dependencies \
         libressl-dev \
         ruby-dev \