Externalize mirroring from ghcr.io to docker hub in another workflow to avoid memory issues

[github-actions[bot]]

🦙 MegaLinter status: ⚠️ WARNING

Descriptor	Linter	Files	Fixed	Errors	Elapsed time
✅ API	spectral	1		0	1.51s
⚠️ BASH	bash-exec	6		1	0.02s
✅ BASH	shellcheck	6		0	0.18s
✅ BASH	shfmt	6	0	0	0.83s
✅ COPYPASTE	jscpd	yes		no	3.44s
✅ DOCKERFILE	hadolint	128		0	16.31s
✅ JSON	jsonlint	20		0	0.2s
✅ JSON	v8r	22		0	33.5s
⚠️ MARKDOWN	markdownlint	266	0	297	33.19s
✅ MARKDOWN	markdown-table-formatter	266	0	0	160.36s
⚠️ PYTHON	bandit	212		66	3.45s
✅ PYTHON	black	212	0	0	6.71s
✅ PYTHON	flake8	212		0	3.48s
✅ PYTHON	isort	212	0	0	1.64s
✅ PYTHON	mypy	212		0	23.47s
✅ PYTHON	pylint	212		0	37.76s
✅ PYTHON	ruff	212	0	0	0.84s
✅ REPOSITORY	checkov	yes		no	55.18s
✅ REPOSITORY	git_diff	yes		no	0.63s
⚠️ REPOSITORY	grype	yes		24	14.29s
✅ REPOSITORY	secretlint	yes		no	20.03s
✅ REPOSITORY	trivy	yes		no	27.05s
✅ REPOSITORY	trivy-sbom	yes		no	0.63s
⚠️ REPOSITORY	trufflehog	yes		1	13.54s
✅ SPELL	cspell	713		0	13.23s
⚠️ SPELL	lychee	348		10	59.02s
✅ XML	xmllint	3	0	0	0.84s
✅ YAML	prettier	160	1	0	6.28s
✅ YAML	v8r	102		0	221.61s
✅ YAML	yamllint	161		0	2.45s

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