chore(Dockerfile): bump snyk/snyk from `e7403dd` to `3a408e2` #1161

Job	Run time
Check Dockerfile	9s
bash_unittests	7s
Run gitlint checks	11s
opa_policies_unittest	5s
Shellcheck	5s
YAML-Linter	3s
Call build and test workflow / Build and check main image	20m 48s
	21m 28s

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