Fix exit code 1 on diff

Author: almahmoud

.github/workflows/update_latest.yaml

@@ -40,7 +40,7 @@ jobs:
         OWNER_REPO="${{steps.defs.outputs.repo}}"
         docker pull $OWNER_REPO/${{matrix.image}}:${{steps.defs.outputs.releasetag}}
         docker pull $OWNER_REPO/${{matrix.image}}:latest
-        IMAGEDIFF=$(diff <(docker inspect $OWNER_REPO/${{matrix.image}}:latest) <(docker inspect $OWNER_REPO/${{matrix.image}}:${{steps.defs.outputs.releasetag}}))
+        IMAGEDIFF=$(diff <(docker inspect $OWNER_REPO/${{matrix.image}}:latest) <(docker inspect $OWNER_REPO/${{matrix.image}}:${{steps.defs.outputs.releasetag}}) || true)
         if [ -z "$IMAGEDIFF" ]; then
           echo '"latest" tag is already "${{steps.defs.outputs.releasetag}}"'
         else