Bump astropy-iers-data from 0.2026.3.30.0.54.34 to 0.2026.4.1.15.5.49 (#1408)

Bumps [astropy-iers-data](https://github.com/astropy/astropy-iers-data) from 0.2026.3.30.0.54.34 to 0.2026.4.1.15.5.49.
- [Release notes](https://github.com/astropy/astropy-iers-data/releases)
- [Commits](astropy/astropy-iers-data@v0.2026.3.30.0.54.34...v0.2026.4.1.15.5.49)

---
updated-dependencies:
- dependency-name: astropy-iers-data
  dependency-version: 0.2026.4.1.15.5.49
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

requirements-dev.txt

@@ -1,4 +1,4 @@
-astropy-iers-data==0.2026.3.30.0.54.34 ; python_version >= "3.11" and python_version < "3.15"
+astropy-iers-data==0.2026.4.1.15.5.49 ; python_version >= "3.11" and python_version < "3.15"
 astropy==7.2.0 ; python_version >= "3.11" and python_version < "3.15"
 autograd==1.8.0 ; python_version >= "3.11" and python_version < "3.15"
 autopep8==2.3.2 ; python_version >= "3.11" and python_version < "3.15"

requirements.txt

@@ -1,4 +1,4 @@
-astropy-iers-data==0.2026.3.30.0.54.34 ; python_version >= "3.11" and python_version < "3.15"
+astropy-iers-data==0.2026.4.1.15.5.49 ; python_version >= "3.11" and python_version < "3.15"
 astropy==7.2.0 ; python_version >= "3.11" and python_version < "3.15"
 bayesian-filters==1.4.5 ; python_version >= "3.11" and python_version < "3.15"
 beartype==0.22.9 ; python_version >= "3.11" and python_version < "3.15"