chore: add Trivy security scanning and fix non-root container users #1753

Job	Run time
Determine Image Tag	3s
test / Build All ev-node Binaries	1m 31s
lint / yamllint	12s
test / Go Mod Tidy Check	32s
lint / markdown-lint	2m 57s
lint / hadolint	7s
lint / golangci-lint	33s
proto / buf-check	11s
test / Run Integration Tests	1m 56s
test / Run Unit Tests	2m 48s
lint / goreleaser-check	7s
docker / Build ev-node-testapp	24s
docker / Build ev-node-evm	22s
docker-tests	0s
test / Run E2E System Tests	7m 38s
test / Run EVM Execution Tests	2m 13s
test / Combine and Upload Coverage	0s
	21m 34s

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