fix: remove DOCKER_PLATFORMS variable from CI/CD workflow #133

Job	Run time
cache / build-cache	7s
lint / ruff-lint	12s
test / unit-test-coverage	13s
docker-build-and-image-scan / build (linux/amd64, linux-amd64)	49s
docker-build-and-image-scan / build (linux/arm64, linux-arm64)	1m 30s
docker-build-and-image-scan / manifest	0s
release	-1s
cache / build-cache	7s
lint / ruff-lint	12s
test / unit-test-coverage	13s
docker-build-and-image-scan / build (linux/arm64, linux-arm64)	1m 26s
docker-build-and-image-scan / build (linux/amd64, linux-amd64)	49s
docker-build-and-image-scan / manifest	0s
release	0s
cache / build-cache	7s
lint / ruff-lint	12s
docker-build-and-image-scan / build (linux/arm64, linux-arm64)	1m 14s
test / unit-test-coverage	13s
docker-build-and-image-scan / build (linux/amd64, linux-amd64)	49s
docker-build-and-image-scan / manifest	0s
release	0s
	8m 12s

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