refactor: replace context.WithCancel with t.Context #1920

Job	Run time
Determine Image Tag	4s
proto / buf-check	7s
lint / yamllint	9s
test / Go Mod Tidy Check	1m 16s
test / Build All ev-node Binaries	1m 33s
test / Run Unit Tests	2m 50s
test / Run Integration Tests	1m 54s
lint / golangci-lint	1m 39s
lint / markdown-lint	21s
lint / hadolint	11s
lint / goreleaser-check	12s
docker / Build ev-node-testapp	12m 50s
docker / Build ev-node-grpc	16m 4s
docker / Build ev-node-evm	16m 22s
test / Run EVM Execution Tests	3m 20s
test / Run E2E System Tests	14m 17s
test / Combine and Upload Coverage	9s
docker-tests	0s
	1h 13m 18s

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