Update drupal

Changes:

- https://github.com/docker-library/drupal/commit/b51cf40: Update to 8.9.8

library/drupal

@@ -19,19 +19,19 @@ Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
 GitCommit: 06872ee93dd032db13fa34b6cb868f8cf3b7f6d1
 Directory: 9.0/fpm-alpine3.12
 
-Tags: 8.9.7-apache-buster, 8.9-apache-buster, 8-apache-buster, 8.9.7-apache, 8.9-apache, 8-apache, 8.9.7, 8.9, 8
+Tags: 8.9.8-apache-buster, 8.9-apache-buster, 8-apache-buster, 8.9.8-apache, 8.9-apache, 8-apache, 8.9.8, 8.9, 8
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: b69c0e44c53c1634a5b29f0a3babfbca2891de6b
+GitCommit: b51cf402be28ed417827779e023a04da1888e8b0
 Directory: 8.9/apache-buster
 
-Tags: 8.9.7-fpm-buster, 8.9-fpm-buster, 8-fpm-buster, 8.9.7-fpm, 8.9-fpm, 8-fpm
+Tags: 8.9.8-fpm-buster, 8.9-fpm-buster, 8-fpm-buster, 8.9.8-fpm, 8.9-fpm, 8-fpm
 Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: b69c0e44c53c1634a5b29f0a3babfbca2891de6b
+GitCommit: b51cf402be28ed417827779e023a04da1888e8b0
 Directory: 8.9/fpm-buster
 
-Tags: 8.9.7-fpm-alpine3.12, 8.9-fpm-alpine3.12, 8-fpm-alpine3.12, 8.9.7-fpm-alpine, 8.9-fpm-alpine, 8-fpm-alpine
+Tags: 8.9.8-fpm-alpine3.12, 8.9-fpm-alpine3.12, 8-fpm-alpine3.12, 8.9.8-fpm-alpine, 8.9-fpm-alpine, 8-fpm-alpine
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: b69c0e44c53c1634a5b29f0a3babfbca2891de6b
+GitCommit: b51cf402be28ed417827779e023a04da1888e8b0
 Directory: 8.9/fpm-alpine3.12
 
 Tags: 8.8.10-apache-buster, 8.8-apache-buster, 8.8.10-apache, 8.8-apache, 8.8.10, 8.8