Update mariadb

Changes:

- https://github.com/docker-library/mariadb/commit/fa08798: Update to 1:10.2.23+maria~bionic

library/mariadb

@@ -14,9 +14,9 @@ Architectures: amd64, arm64v8, ppc64le
 GitCommit: 93f1e9c9082364522c77b94e98299d7d398089f8
 Directory: 10.3
 
-Tags: 10.2.22-bionic, 10.2-bionic, 10.2.22, 10.2
+Tags: 10.2.23-bionic, 10.2-bionic, 10.2.23, 10.2
 Architectures: amd64, arm64v8, ppc64le
-GitCommit: 93f1e9c9082364522c77b94e98299d7d398089f8
+GitCommit: fa087985605ca508ac661a52164db8c292c9f779
 Directory: 10.2
 
 Tags: 10.1.38-bionic, 10.1-bionic, 10.1.38, 10.1