chore(Dockerfile): bump snyk/snyk from `21217bf` to `2ec253d` #1117

Job	Run time
Check Dockerfile	7s
bash_unittests	7s
opa_policies_unittest	10s
Shellcheck	4s
YAML-Linter	3s
Run gitlint checks	0s
Call build and test workflow / Build and check main image	7m 9s
	7m 40s

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