Update Build_wheels_for_cpython27_armhf.yml

Author: sergey-dryabzhinsky

.github/workflows/Build_wheels_for_cpython27_armhf.yml

@@ -19,7 +19,7 @@ jobs:
             matrix: linux
             arch: armhf
             tag_arch: armhf
-            release: xenial
+            release: bionic
             mirror: http://ports.ubuntu.com/ubuntu-ports
             version: 1.5.6.3
            # pyver: "2.7"