test: run against latest python patch version in each series

Author: klaernie

run-tests.sh

@@ -6,8 +6,8 @@ PY_DOCKER_IMAGES=()
 if [ -n "$TEST_PY_VERSION" ]; then
 	PY_VERSIONS+=("$TEST_PY_VERSION")
 else
-	PY_VERSIONS+=("2.7.16")
-	PY_VERSIONS+=("3.7.4")
+	PY_VERSIONS+=("2.7")
+	PY_VERSIONS+=("3.7")
 	PY_VERSIONS+=("3.8")
 	PY_VERSIONS+=("3.9")
 	PY_VERSIONS+=("3.10")