feat: add decidim-app RC 0.31 + fix demo env #546

Job	Run time
generate-matrix	4s
run-dbt-tests (projects/sytral)	6m 16s
run-dbt-tests (projects/chambery)	6m 6s
run-dbt-tests (projects/toulouse)	6m 15s
run-dbt-tests (projects/malakoff)	6m 16s
run-dbt-tests (projects/decidim_0_29_multilang)	1m 40s
run-dbt-tests (projects/plaine_commune)	6m 17s
run-dbt-tests (projects/marseille)	6m 15s
run-dbt-tests (projects/bagneux)	6m 16s
run-dbt-tests (projects/app_dev_k8s)	1s
run-dbt-tests (projects/mel)	6m 16s
run-dbt-tests (projects/cour_des_comptes)	6m 16s
run-dbt-tests (projects/arcueil)	5m 11s
run-dbt-tests (projects/meyzieu)	4m 50s
run-dbt-tests (projects/angers)	6m 15s
run-dbt-tests (projects/lyon)	6m 3s
run-dbt-tests (projects/cultuur_connect)	6m 10s
run-dbt-tests (projects/real_deal)	1s
run-dbt-tests (projects/valbonne)	6m 3s
run-dbt-tests (projects/rc031)	21s
run-dbt-tests (projects/tours)	6m 15s
run-dbt-tests (projects/montpellier)	5m 25s
run-dbt-tests (projects/nice)	6m 15s
run-dbt-tests (projects/loire_atlantique)	1m 2s
run-dbt-tests (projects/cachan)	5m 40s
run-dbt-tests (projects/brandenburg)	1s
run-dbt-tests (projects/ps_belge)	5m 37s
run-dbt-tests (projects/nanterre)	1s
run-dbt-tests (projects/thionville)	4m 33s
run-dbt-tests (projects/colombes)	6m 15s
run-dbt-tests (projects/casa)	1m 22s
run-dbt-tests (projects/cese)	6m 2s
run-dbt-tests (projects/grand_nancy)	50s
run-dbt-tests (projects/grand_poitiers)	1s
run-dbt-tests (projects/villeurbanne)	6m 2s
run-dbt-tests (projects/nets4dem)	34s
	2h 28m 47s

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