Bump debian from 12.6-slim to 12.7-slim

Bumps debian from 12.6-slim to 12.7-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:12.6 AS bootstrap
+FROM docker.io/debian:12.7 AS bootstrap
 
 RUN apt-get update && apt-get install -y \
     build-essential \
@@ -19,7 +19,7 @@ RUN spack -e /root/spack-env install --fail-fast
 RUN spack view add -i /bootstrap-view $(spack find -H)
 
 
-FROM docker.io/debian:12.6 AS base
+FROM docker.io/debian:12.7 AS base
 
 RUN apt-get update && apt-get install -y \
     libc6-dev
@@ -39,7 +39,7 @@ RUN spack clean -a
 RUN spack gc -e /root/spack-env -y -b
 
 
-FROM docker.io/debian:12.6-slim
+FROM docker.io/debian:12.7-slim
 
 RUN rm -rf /usr/bin /usr/sbin