Pin dependencies

This MR contains the following updates:

Package	Type	Update	Change
alpine	final	pinDigest	-> c5b1261
golang	stage	pinDigest	-> 16438a8
golangci/golangci-lint	image	pinDigest	-> e699df9
registry.gitlab.com/pipeline-components/hadolint	image	pinDigest	-> 430e949
registry.gitlab.com/pipeline-components/markdownlint	image	pinDigest	-> 1da3e44
registry.gitlab.com/pipeline-components/yamllint	image	pinDigest	-> 88b5f75

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