Update fluentd to v1.19.1 (docker-library#20407)

See https://www.fluentd.org/blog/fluentd-v1.19.1-has-been-released

Signed-off-by: Kentaro Hayashi <[email protected]>

Author: kenhys

library/fluentd

@@ -10,7 +10,7 @@ GitCommit: 505a1af75b4a4adb40d576df7b18cebab853264e
 Directory: v1.16/debian
 
 # Debian images
-Tags: v1.19.0-debian-1.0, v1.19-debian-1, v1.19.0-1.0, v1.19-1, latest
+Tags: v1.19.1-debian-1.0, v1.19-debian-1, v1.19.0-1.0, v1.19-1, latest
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 42a0afa30b3821482bce1ba8e67266d745619724
+GitCommit: 1e7ff373975402c1e5b10e9b2ae41e50b3d273a3
 Directory: v1.19/debian