build(deps): bump debian in /src

Bumps debian from unstable-20241223 to unstable-20250113.

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

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

src/Dockerfile

@@ -1,4 +1,4 @@
-FROM debian:unstable-20241223
+FROM debian:unstable-20250113
 LABEL maintainer="richard.steinbrueck@googlemail.com"
 
 ## Configuration ##############################################################