fix(actions/checkout): bump actions/checkout to v6.0.3 #781

Job	Run time
ci / linter / 🧹 Lint Code Base	2m 33s
ci / linter / 🛡️ CodeQL Analysis (actions)	1m 16s
ci / linter / prepare-actions-linting	7s
ci / linter / 📌 Check GitHub Actions Pinning	8s
ci / test-action-get-issue-number	0s
ci / test-action-slugify	-1s
ci / test-action-repository-owner-is-organization	-1s
ci / test-action-matrix-outputs	-1s
ci / test-action-parse-ci-reports	-1s
ci / test-action-checkout	-1s
ci / test-action-working-directory	-1s
ci / test-action-checkout-issue-comment	-1s
ci / test-action-get-github-actions-bot-user	-1s
ci / linter / 🛡️ CodeQL Analysis (actions)	1m 7s
ci / linter / 🧹 Lint Code Base	2m 33s
ci / linter / prepare-actions-linting	7s
ci / linter / 📌 Check GitHub Actions Pinning	8s
ci / test-action-repository-owner-is-organization	0s
ci / test-action-working-directory	0s
ci / test-action-checkout	0s
ci / test-action-slugify	0s
ci / test-action-get-github-actions-bot-user	0s
ci / test-action-checkout-issue-comment	0s
ci / test-action-matrix-outputs	0s
ci / test-action-parse-ci-reports	0s
ci / test-action-get-issue-number	0s
	7m 51s

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