Update redmine

Changes:

- https://github.com/docker-library/redmine/commit/21de6f6: Merge pull request https://github.com/docker-library/redmine/pull/332 from infosiftr/alpine
- https://github.com/docker-library/redmine/commit/c8dc403: Update Alpine versions

library/redmine

@@ -9,17 +9,27 @@ Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, mips64le, ppc64le, s390x
 GitCommit: 2ab2ec39c515e0f4ef96674751d1363161aa63d4
 Directory: 5.1/bookworm
 
-Tags: 5.1.2-alpine3.18, 5.1-alpine3.18, 5-alpine3.18, alpine3.18, 5.1.2-alpine, 5.1-alpine, 5-alpine, alpine
+Tags: 5.1.2-alpine3.20, 5.1-alpine3.20, 5-alpine3.20, alpine3.20, 5.1.2-alpine, 5.1-alpine, 5-alpine, alpine
+Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
+GitCommit: c8dc403ae41f19c6017daac7596bc14a6ae20207
+Directory: 5.1/alpine3.20
+
+Tags: 5.1.2-alpine3.19, 5.1-alpine3.19, 5-alpine3.19, alpine3.19
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: 51b7921366b46e2dd5a7f9629b933a3e7a68fdb1
-Directory: 5.1/alpine3.18
+GitCommit: c8dc403ae41f19c6017daac7596bc14a6ae20207
+Directory: 5.1/alpine3.19
 
 Tags: 5.0.8, 5.0, 5.0.8-bookworm, 5.0-bookworm
 Architectures: amd64, arm32v5, arm32v7, arm64v8, i386, mips64le, ppc64le, s390x
 GitCommit: 2ab2ec39c515e0f4ef96674751d1363161aa63d4
 Directory: 5.0/bookworm
 
-Tags: 5.0.8-alpine3.18, 5.0-alpine3.18, 5.0.8-alpine, 5.0-alpine
+Tags: 5.0.8-alpine3.20, 5.0-alpine3.20, 5.0.8-alpine, 5.0-alpine
+Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
+GitCommit: c8dc403ae41f19c6017daac7596bc14a6ae20207
+Directory: 5.0/alpine3.20
+
+Tags: 5.0.8-alpine3.19, 5.0-alpine3.19
 Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, s390x
-GitCommit: a47825ab3251935beedb9d83ecdc80e78d1ccf28
-Directory: 5.0/alpine3.18
+GitCommit: c8dc403ae41f19c6017daac7596bc14a6ae20207
+Directory: 5.0/alpine3.19