build(deps): bump debian from 12.2-slim to 12.4-slim

Bumps debian from 12.2-slim to 12.4-slim.

---
updated-dependencies:
- dependency-name: debian
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM docker.io/debian:12.2-slim
+FROM docker.io/debian:12.4-slim
 
 ARG GITOLITE_PACKAGE_VERSION=3.6.12-1
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