Update mariadb

Changes:

- https://github.com/docker-library/mariadb/commit/23417d5: Update to 1:10.4.4+maria~bionic

library/mariadb

@@ -4,9 +4,9 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/mariadb.git
 
-Tags: 10.4.3-bionic, 10.4-bionic, rc-bionic, 10.4.3, 10.4, rc
+Tags: 10.4.4-bionic, 10.4-bionic, rc-bionic, 10.4.4, 10.4, rc
 Architectures: amd64, arm64v8, ppc64le
-GitCommit: 93f1e9c9082364522c77b94e98299d7d398089f8
+GitCommit: 23417d54f56958b193e65ab548c34b3b336a1758
 Directory: 10.4
 
 Tags: 10.3.14-bionic, 10.3-bionic, 10-bionic, bionic, 10.3.14, 10.3, 10, latest