build(deps): bump astropy from 5.3 to 5.3.1

Bumps [astropy](https://github.com/astropy/astropy) from 5.3 to 5.3.1.
- [Release notes](https://github.com/astropy/astropy/releases)
- [Changelog](https://github.com/astropy/astropy/blob/main/docs/changelog.rst)
- [Commits](astropy/astropy@v5.3...v5.3.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements.txt

@@ -1,4 +1,4 @@
-astropy==5.3
+astropy==5.3.1
 ipython==8.14.0
 matplotlib==3.7.2
 numpy==1.25.2