ci: use default_distro for coverity job

Previously, the coverity scheduled job seemed to fail
randomly because the image that it expected to use was
not available, due to not depending on the "prep" job.

This commit resolves the problem by making sure
the image is always built when coverity runs.

.gitlab-ci.yml

@@ -60,11 +60,11 @@ variables:
   #
   # This is done by running `ci-fairy generate-template` and possibly bumping
   # ".default_tag".
-  ALPINE_TAG:  'tag-490e97b0b9c7'
-  CENTOS_TAG:  'tag-4a2c52092329'
-  DEBIAN_TAG:  'tag-aef8f2fd2198'
-  FEDORA_TAG:  'tag-4a2c52092329'
-  UBUNTU_TAG:  'tag-aef8f2fd2198'
+  ALPINE_TAG:  'tag-28624746b6b1'
+  CENTOS_TAG:  'tag-ca7bb4b2cd94'
+  DEBIAN_TAG:  'tag-37f5e32f6021'
+  FEDORA_TAG:  'tag-ca7bb4b2cd94'
+  UBUNTU_TAG:  'tag-37f5e32f6021'
 
   ALPINE_EXEC: 'bash .gitlab-ci/alpine-install.sh'
   CENTOS_EXEC: 'bash .gitlab-ci/fedora-install.sh'
@@ -112,7 +112,7 @@ tier1:fedora:41@prep:
     FDO_DISTRIBUTION_TAG: $FEDORA_TAG
     FDO_DISTRIBUTION_EXEC: $FEDORA_EXEC
   rules:
-    - if: $CI_PIPELINE_SOURCE != 'schedule'
+    - if: $CI_PIPELINE_SOURCE != 'schedule' || $SCHEDULED_PIPELINE_NAME == "weekly"
 
 tier2:fedora:rawhide@prep:
   extends:
@@ -674,10 +674,11 @@ coverity:
   extends:
     - .fdo.distribution-image@fedora
   variables:
-    FDO_DISTRIBUTION_VERSION: '40'
+    FDO_DISTRIBUTION_VERSION: '41'
     FDO_DISTRIBUTION_TAG: $FEDORA_TAG
   stage: coverity
-  needs: []
+  needs:
+    - "tier1:fedora:41@prep"
   rules:
     - if: $CI_PIPELINE_SOURCE == "schedule" && $SCHEDULED_PIPELINE_NAME == "weekly"
   script: