[9.20] chg: ci: Exclude some RPZ files from long stress test artifacts

This fixes 6f86885304, that excluded files
only from short stress tests.

Validation jobs:
- [x] short - [#4756989](https://gitlab.isc.org/isc-projects/bind9/-/jobs/4756989/artifacts/browse/output/ns4/) - 
- [x] long - [#4757196](https://gitlab.isc.org/isc-projects/bind9/-/jobs/4757196/artifacts/browse/output/ns4/)

Backport of MR !9522

Merge branch 'backport-mnowak/exclude-some-rpz-files-from-long-stress-tests-artifacts-9.20' into 'bind-9.20'

See merge request isc-projects/bind9!9538

.gitlab-ci.yml

@@ -1667,7 +1667,7 @@ shotgun:dot:
     - job: autoreconf
       artifacts: true
 
-.stress-test-short: &stress_test_short_job
+.stress-test-long: &stress_test_long_job
   <<: *stress_test
   artifacts:
     untracked: true
@@ -1675,9 +1675,21 @@ shotgun:dot:
       - "output/ns4/*.dtq*"
       - "output/ns4/large-delta-rpz*.local"
       - "output/rpz_*"
+    expire_in: "1 week"
     when: always
+  timeout: 2h
+
+.stress-test-short: &stress_test_short_job
+  <<: *stress_test
   only:
     - merge_requests
+  artifacts:
+    untracked: true
+    exclude:
+      - "output/ns4/*.dtq*"
+      - "output/ns4/large-delta-rpz*.local"
+      - "output/rpz_*"
+    when: always
 
 stress:short:authoritative:fedora:40:amd64:
   <<: *fedora_40_amd64_image
@@ -1784,14 +1796,6 @@ stress:short:rpz:freebsd13:amd64:
     RATE: 1500
     RUN_TIME: 15
 
-.stress-test-long: &stress_test_long_job
-  <<: *stress_test
-  artifacts:
-    untracked: true
-    expire_in: "1 week"
-    when: always
-  timeout: 2h
-
 stress:authoritative:fedora:40:amd64:
   <<: *fedora_40_amd64_image
   <<: *linux_amd64