ci: update Ansible to 2.9.27

Changelogs:
- https://github.com/ansible/ansible/blob/stable-2.9/changelogs/CHANGELOG-v2.9.rst
- https://docs.ansible.com/ansible/latest/porting_guides/porting_guide_2.9.html

Fix #1325

Author: php-coder

.travis.yml

@@ -19,7 +19,7 @@ before_script:
       mysql -u root -e 'CREATE DATABASE mystamps CHARACTER SET utf8;';
       mkdir -p /tmp/uploads /tmp/preview;
       cp src/main/resources/test/test.png /tmp/uploads/1.png;
-      pip install --user ansible==2.9.2;
+      pip install --user ansible==2.9.27;
     elif [ "$SPRING_PROFILES_ACTIVE" = 'postgres' ]; then
       psql -U postgres -c 'create database mystamps;';
     fi