[buildbot] Revert "buildworker,buildmaster: bump Debian to version 12"

[LEDE Commits]

ynezz pushed a commit to buildbot.git, branch main:
https://git.openwrt.org/aab8a542db9576d8ac8121db084f784897742af9

commit aab8a542db9576d8ac8121db084f784897742af9
Author: Petr Štetiar <ynezz at true.cz>
AuthorDate: Mon Nov 4 06:08:14 2024 +0000

    Revert "buildworker,buildmaster: bump Debian to version 12"
    
    This reverts commit 3ac7d39bd4c364d76e78b3ba50c23a68e0b05c0f as it was
    decided to stay on Debian 11 for 24.10 release as well.
    
    Signed-off-by: Petr Štetiar <ynezz at true.cz>
---
 docker/buildmaster/Dockerfile | 2 +-
 docker/buildworker/Dockerfile | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/docker/buildmaster/Dockerfile b/docker/buildmaster/Dockerfile
index ccaf4a9..b73335f 100644
--- a/docker/buildmaster/Dockerfile
+++ b/docker/buildmaster/Dockerfile
@@ -23,7 +23,7 @@ RUN git checkout $APK_TOOLS_COMMIT
 RUN make -j$(nproc) static
 
 
-FROM        debian:12
+FROM        debian:11
 MAINTAINER  OpenWrt Maintainers
 
 ARG         DEBIAN_FRONTEND=noninteractive
diff --git a/docker/buildworker/Dockerfile b/docker/buildworker/Dockerfile
index b7cf36a..bc616ad 100644
--- a/docker/buildworker/Dockerfile
+++ b/docker/buildworker/Dockerfile
@@ -1,4 +1,4 @@
-FROM        debian:12
+FROM        debian:11
 MAINTAINER  OpenWrt Maintainers
 
 ARG         DEBIAN_FRONTEND=noninteractive