Upgrader to debian bookworm

Change-Id: Ia69150b55a96b59c393b433de0c9b81a58fa7061

zuul.d/jobs.yaml

diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index 802a9c8..bf42f94 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -56,7 +56,7 @@
       - zuul: opendev.org/zuul/zuul-jobs
     timeout: 1800
     post-timeout: 1800
-    nodeset: debian-bullseye
+    nodeset: debian-bookworm
 
 # See the procedure described above "base" before making changes to
 # this job.
@@ -74,7 +74,7 @@
       - zuul: opendev.org/zuul/zuul-jobs
     timeout: 1800
     post-timeout: 1800
-    nodeset: debian-bullseye
+    nodeset: debian-bookworm
 
 # A mutex (default semaphore max is 1) so that only one job at a time
 # is updating the plugins.json file.

zuul.d/nodesets.yaml

diff --git a/zuul.d/nodesets.yaml b/zuul.d/nodesets.yaml
index 65a889b..f9eeb7d 100644
--- a/zuul.d/nodesets.yaml
+++ b/zuul.d/nodesets.yaml
@@ -1,11 +1,11 @@
 - nodeset:
-    name: debian-bullseye
+    name: debian-bookworm
     nodes:
       - name: testnode
-        label: debian-bullseye-e2-standard-8
+        label: debian-bookworm-e2-standard-8
 
 - nodeset:
-    name: debian-bullseye-large
+    name: debian-bookworm-large
     nodes:
       - name: testnode
-        label: debian-bullseye-e2-standard-16
+        label: debian-bookworm-e2-standard-16