Update docker (#20091)

Changes:

- https://github.com/docker-library/docker/commit/20040ec: Merge pull request https://github.com/docker-library/docker/pull/555 from jnoordsij/add-29rc
- https://github.com/docker-library/docker/commit/3cb6ed4: Add 29.0.0-rc.1
- https://github.com/docker-library/docker/commit/0e64a28: Add support for docker-prefixed git tags

Co-authored-by: Docker Library Bot <[email protected]>

library/docker

@@ -5,6 +5,37 @@ Maintainers: Tianon Gravi <[email protected]> (@tianon),
 GitRepo: https://github.com/docker-library/docker.git
 Builder: buildkit
 
+Tags: 29.0.0-rc.1-cli, 29-rc-cli, rc-cli, 29.0.0-rc.1-cli-alpine3.22
+Architectures: amd64, arm32v6, arm32v7, arm64v8
+GitCommit: 3cb6ed40f1274ee9041835533bb625cf55f63e91
+Directory: 29-rc/cli
+
+Tags: 29.0.0-rc.1-dind, 29-rc-dind, rc-dind, 29.0.0-rc.1-dind-alpine3.22, 29.0.0-rc.1, 29-rc, rc, 29.0.0-rc.1-alpine3.22
+Architectures: amd64, arm32v6, arm32v7, arm64v8
+GitCommit: 3cb6ed40f1274ee9041835533bb625cf55f63e91
+Directory: 29-rc/dind
+
+Tags: 29.0.0-rc.1-dind-rootless, 29-rc-dind-rootless, rc-dind-rootless
+Architectures: amd64, arm64v8
+GitCommit: 3cb6ed40f1274ee9041835533bb625cf55f63e91
+Directory: 29-rc/dind-rootless
+
+Tags: 29.0.0-rc.1-windowsservercore-ltsc2025, 29-rc-windowsservercore-ltsc2025, rc-windowsservercore-ltsc2025
+SharedTags: 29.0.0-rc.1-windowsservercore, 29-rc-windowsservercore, rc-windowsservercore
+Architectures: windows-amd64
+GitCommit: 3cb6ed40f1274ee9041835533bb625cf55f63e91
+Directory: 29-rc/windows/windowsservercore-ltsc2025
+Constraints: windowsservercore-ltsc2025
+Builder: classic
+
+Tags: 29.0.0-rc.1-windowsservercore-ltsc2022, 29-rc-windowsservercore-ltsc2022, rc-windowsservercore-ltsc2022
+SharedTags: 29.0.0-rc.1-windowsservercore, 29-rc-windowsservercore, rc-windowsservercore
+Architectures: windows-amd64
+GitCommit: 3cb6ed40f1274ee9041835533bb625cf55f63e91
+Directory: 29-rc/windows/windowsservercore-ltsc2022
+Constraints: windowsservercore-ltsc2022
+Builder: classic
+
 Tags: 28.5.1-cli, 28.5-cli, 28-cli, cli, 28.5.1-cli-alpine3.22
 Architectures: amd64, arm32v6, arm32v7, arm64v8
 GitCommit: b510c2bbe64b878dee6480992ab5d8cd9c02027d