Run an additional respdiff job for merge requests and schedules

On MRs it uses the merge target as the reference.
In schedules it uses the latest released version for this branch as the
reference.

.gitlab-ci.yml

@@ -1584,6 +1584,33 @@ respdiff-third-party:
     - bash respdiff.sh -s third_party -q "${PWD}/100k_mixed.txt" -c 1 -w "${PWD}/rspworkdir" "${CI_PROJECT_DIR}"
     - cd ../.. && ninja -C build clean >/dev/null 2>&1
 
+.respdiff-recent-named: &respdiff_recent_named
+  <<: *respdiff_job
+  <<: *debian_bookworm_amd64_image
+  <<: *default_triggering_rules
+  needs:
+    - job: ci-variables
+      artifacts: true
+  script:
+    - cd ${CI_PROJECT_DIR}
+    - mkdir version-under-test
+    - mv build version-under-test/
+    - BASELINE=${CI_MERGE_REQUEST_TARGET_BRANCH_NAME:-$BIND_BASELINE_VERSION}
+    - git fetch --unshallow origin ${BASELINE}
+    - git checkout FETCH_HEAD
+    - *configure
+    - meson compile -C build
+    - cd bind9-qa/respdiff
+    - bash respdiff.sh -s named -q "${PWD}/100k_mixed.txt" -c 3 -w "${PWD}/rspworkdir" "${CI_PROJECT_DIR}/version-under-test" "${CI_PROJECT_DIR}/build/named"
+
+respdiff:recent-named:
+  <<: *respdiff_recent_named
+  variables:
+    CC: gcc
+    CFLAGS: "${CFLAGS_COMMON} -DISC_TRACK_PTHREADS_OBJECTS"
+    EXTRA_CONFIGURE: "-Doptimization=g"
+    MAX_DISAGREEMENTS_PERCENTAGE: "0.3"
+
 # Performance tests
 
 shotgun:udp: