Bump astropy-iers-data to 0.2026.7.13.0.54.2

[FlorianPfaff]

Rebases the dependency update from #4270 onto current main without changing any unrelated generated requirements. This preserves the exact three tested requirement-file blobs from the Dependabot update while rerunning CI against the current codebase.

Supersedes #4270.

[github-actions]

✅MegaLinter analysis: Success

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ COPYPASTE	jscpd	yes		no	no	17.63s
✅ JSON	prettier	7	0	0	0	0.93s
✅ JSON	v8r	7		0	0	3.22s
✅ MARKDOWN	markdownlint	68	0	0	0	1.29s
✅ MARKDOWN	markdown-table-formatter	68	0	0	0	0.54s
✅ PYTHON	black	1489	182	0	0	73.06s
✅ PYTHON	isort	1489	327	0	0	1.97s
✅ REPOSITORY	betterleaks	yes		no	no	1.72s
✅ REPOSITORY	checkov	yes		no	no	53.2s
✅ REPOSITORY	gitleaks	yes		no	no	16.73s
✅ REPOSITORY	git_diff	yes		no	no	0.19s
✅ REPOSITORY	secretlint	yes		no	no	38.69s
✅ REPOSITORY	syft	yes		no	no	4.56s
✅ REPOSITORY	trivy-sbom	yes		no	no	5.73s
✅ REPOSITORY	trufflehog	yes		no	no	25.23s
✅ YAML	prettier	11	0	0	0	0.62s
✅ YAML	v8r	11		0	0	8.53s
✅ YAML	yamllint	11		0	0	0.44s

Notices

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