Update links in README to use https #356

Job	Run time
arm64-base / build-test-upload	59s
amd64-base / build-test-upload	57s
amd64-base-with-services	1s
amd64-lab	1s
amd64-full-stack	1s
amd64-push-dockerhub	1s
amd64-push-ghcr (base-with-services) / tag-push	8s
amd64-push-ghcr (base) / tag-push	11s
amd64-push-ghcr (full-stack) / tag-push	13s
amd64-push-ghcr (lab) / tag-push	10s
arm64-base-with-services	1s
arm64-lab	1s
arm64-full-stack	1s
arm64-push-dockerhub	1s
arm64-push-ghcr (full-stack) / tag-push	9s
arm64-push-ghcr (base) / tag-push	11s
arm64-push-ghcr (lab) / tag-push	8s
merge-tags-dockerhub	1s
arm64-push-ghcr (base-with-services) / tag-push	10s
merge-tags-ghcr (full-stack) / merge-tags	12s
merge-tags-ghcr (base-with-services) / merge-tags	9s
merge-tags-ghcr (base) / merge-tags	12s
merge-tags-ghcr (lab) / merge-tags	8s
release	1s
	4m 7s

Provide feedback