Update mariadb

Changes:

- https://github.com/docker-library/mariadb/commit/9ddcc2b: Update to 1:10.3.21+maria~bionic
- https://github.com/docker-library/mariadb/commit/f03a74b: Update to 1:10.2.30+maria~bionic
- https://github.com/docker-library/mariadb/commit/2345e98: Update to 1:10.4.11+maria~bionic

library/mariadb

@@ -4,19 +4,19 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
              Joseph Ferguson <[email protected]> (@yosifkit)
 GitRepo: https://github.com/docker-library/mariadb.git
 
-Tags: 10.4.10-bionic, 10.4-bionic, 10-bionic, bionic, 10.4.10, 10.4, 10, latest
+Tags: 10.4.11-bionic, 10.4-bionic, 10-bionic, bionic, 10.4.11, 10.4, 10, latest
 Architectures: amd64, arm64v8, ppc64le
-GitCommit: ad6b97a27e6c09b81fb8d1e091b276b8ca5fff76
+GitCommit: 2345e98dc89edae8f11c35ad838887f45859de75
 Directory: 10.4
 
-Tags: 10.3.20-bionic, 10.3-bionic, 10.3.20, 10.3
+Tags: 10.3.21-bionic, 10.3-bionic, 10.3.21, 10.3
 Architectures: amd64, arm64v8, ppc64le
-GitCommit: ad6b97a27e6c09b81fb8d1e091b276b8ca5fff76
+GitCommit: 9ddcc2b4b0422a83dafc52e5574474dafc2fa9ca
 Directory: 10.3
 
-Tags: 10.2.29-bionic, 10.2-bionic, 10.2.29, 10.2
+Tags: 10.2.30-bionic, 10.2-bionic, 10.2.30, 10.2
 Architectures: amd64, arm64v8, ppc64le
-GitCommit: ad6b97a27e6c09b81fb8d1e091b276b8ca5fff76
+GitCommit: f03a74b3d8fe11a1da89a6f09dcac734f30dfd50
 Directory: 10.2
 
 Tags: 10.1.43-bionic, 10.1-bionic, 10.1.43, 10.1