Fix sed command for master branch

.gitlab-ci.yml

@@ -55,7 +55,7 @@ installbinaries:
     - "DOWNLOADS=\"$SERVER_URL $CLIENT_URL $REGISTRATION_URL $UDB_URL $GATEWAY_URL\""
     - >
       if [ "$CI_BUILD_REF_NAME" == "master" ]; then
-        DOWNLOADS=$(echo $DOWNLOADS | sed -i "s/artifacts\/$DEFAULTBRANCH\/raw/artifacts\/master\/raw/g")
+        DOWNLOADS=$(echo $DOWNLOADS | sed "s/artifacts\/$DEFAULTBRANCH\/raw/artifacts\/master\/raw/g")
       fi
     - >
       for D in $DOWNLOADS; do