Only proceed if the spec differs

Avoids overwriting identical specs and burying the old ones.

.github/workflows/ci-openapi.yml

@@ -176,6 +176,9 @@ jobs:
           script: |
             TGT_DIR="/srv/repository/main/openapi"
             LAST_SPEC="$( ls -lt ${TGT_DIR} | grep 'jellyfin-openapi' | head -1 | awk '{ print $NF }' )"
+            if ! diff /srv/incoming/openapi/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}.json ${TGT_DIR}/unstable/${LAST_SPEC} &>/dev/null; then
+                exit 0
+            fi
             sudo mv /srv/incoming/openapi/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}.json ${TGT_DIR}/unstable/jellyfin-openapi-${{ env.JELLYFIN_VERSION }}.json
             # Delete previous jellyfin-openapi-unstable_previous.json
             sudo rm ${TGT_DIR}/jellyfin-openapi-unstable_previous.json