release: Update to v4.1.2 (#2287)

Signed-off-by: Hiroshi Hatake <hiroshi@chronosphere.io>
Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: Hiroshi Hatake <hiroshi@chronosphere.io>

Author: fluent-bot

installation/downloads/docker.md

@@ -44,6 +44,8 @@ The following table describes the Linux container tags that are available on Doc
 | ------------ | ------------------------- | -------------------------------------------------------------- |
 | 4.2.0-debug | x86_64, arm64v8, arm32v7, s390x | Debug images |
 | 4.2.0 | x86_64, arm64v8, arm32v7, s390x | Release [v4.2.0](https://fluentbit.io/announcements/v4.2.0/) |
+| 4.1.2-debug | x86_64, arm64v8, arm32v7, s390x | Debug images |
+| 4.1.2 | x86_64, arm64v8, arm32v7, s390x | Release [v4.1.2](https://fluentbit.io/announcements/v4.1.2/) |
 | 4.1.1-debug | x86_64, arm64v8, arm32v7, s390x | Debug images |
 | 4.1.1 | x86_64, arm64v8, arm32v7, s390x | Release [v4.1.1](https://fluentbit.io/announcements/v4.1.1/) |
 | 4.1.0-debug | x86_64, arm64v8, arm32v7, s390x | Debug images |