feat: check for correct signer in PFB construction #6162

Job	Run time
markdown-linter / markdown-lint	7s
goreleaser / goreleaser-check	1m 57s
markdown-linter / markdown-link-check	2m 39s
test / test	9m 31s
test / test-coverage	4m 9s
test / test-race	6m 40s
test / test-short	2m 58s
test / test-fuzz	5m 54s
lint / golangci-lint	1m 45s
lint / yamllint	8s
lint / hadolint / hadolint	6s
goreleaser / goreleaser	0s
	35m 54s

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