backend: change docker-compose to docker compose

docker-compose has been dropped from Github Actions Ubuntu runners -
let's use the new standard way.

Signed-off-by: Mathieu Tortuyaux <mtortuyaux@microsoft.com>

.github/workflows/updater.yml

@@ -23,7 +23,7 @@ jobs:
 
     - name: Start postgres dependency
       run: |
-        docker-compose -f backend/docker-compose.test.yaml up -d postgres
+        docker compose -f backend/docker-compose.test.yaml up -d postgres
 
     - name: Test library
       env:

backend/Makefile

@@ -33,11 +33,11 @@ check-code-coverage:
 
 .PHONY: test-service-up
 test-service-up:
-	docker-compose -f ./docker-compose.test.yaml up -d --build
+	docker compose -f ./docker-compose.test.yaml up -d --build
 
 .PHONY: test-service-down
 test-service-down:
-	docker-compose -f ./docker-compose.test.yaml down
+	docker compose -f ./docker-compose.test.yaml down
 
 .PHONY: check-backend-with-container
 check-backend-with-container: test-service-down