Update `ParticipantDeclarationsQuery` to include `completed` previous #3810

Job	Run time
Build and push Docker image	3m 39s
Lint / Lint JS	22s
Lint / Lint SCSS	47s
Lint / Lint ERB	39s
Lint / Lint ruby	1m 13s
Run Brakeman vulnerability scanner / Brakeman Scan	29s
Run the RSpec tests / Run rspec (6, 0)	7m 13s
Run the RSpec tests / Run rspec (6, 1)	9m 26s
Run the RSpec tests / Run rspec (6, 2)	10m 8s
Run the RSpec tests / Run end to end scenarios (10, 0)	10m 2s
Run the RSpec tests / Run rspec (6, 3)	9m 26s
Run the RSpec tests / Run rspec (6, 4)	8m 58s
Run the RSpec tests / Run end to end scenarios (10, 1)	9m 39s
Run the RSpec tests / Run rspec (6, 5)	9m 16s
Run the RSpec tests / Run end to end scenarios (10, 2)	9m 26s
Run the RSpec tests / Run end to end scenarios (10, 3)	8m 59s
Run the RSpec tests / Run end to end scenarios (10, 4)	10m 37s
Run the RSpec tests / Run end to end scenarios (10, 5)	10m 44s
Run the RSpec tests / Run end to end scenarios (10, 6)	11m 12s
Run the RSpec tests / Run end to end scenarios (10, 7)	11m 37s
Run the RSpec tests / Run end to end scenarios (10, 8)	9m 37s
Run the RSpec tests / Run end to end scenarios (10, 9)	10m 10s
Run Smoke tests	0s
Deploy review	3m 8s
Permit merge	1s
Deploy staging	0s
Deploy production	0s
Deploy sandbox	0s
	2h 46m 48s

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