Update redmine

[tianon]

Changes:

• docker-library/redmine@879e182: Merge pull request Drop arm32v6 for 6.1+ redmine#395 from infosiftr/slow
• docker-library/redmine@a78ef22: Drop arm32v6 for 6.1+

[github-actions]

Diff for cff3944:

diff --git a/_bashbrew-cat b/_bashbrew-cat
index d5a8301..f67d2d3 100644
--- a/_bashbrew-cat
+++ b/_bashbrew-cat
@@ -47,12 +47,12 @@ GitCommit: 782887eb82bfea15a4a6ea05569b81b323dd25cc
 Directory: 6.1/trixie
 
 Tags: 6.1.0-alpine3.21, 6.1-alpine3.21, 6-alpine3.21, alpine3.21
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
+Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
 GitCommit: 782887eb82bfea15a4a6ea05569b81b323dd25cc
 Directory: 6.1/alpine3.21
 
 Tags: 6.1.0-alpine3.22, 6.1-alpine3.22, 6-alpine3.22, alpine3.22, 6.1.0-alpine, 6.1-alpine, 6-alpine, alpine
-Architectures: amd64, arm32v6, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
+Architectures: amd64, arm32v7, arm64v8, i386, ppc64le, riscv64, s390x
 GitCommit: 782887eb82bfea15a4a6ea05569b81b323dd25cc
 Directory: 6.1/alpine3.22

Relevant Maintainers:

• redmine: @tianon @yosifkit