build(deps): update ipython requirement

Updates the requirements on [ipython](https://github.com/ipython/ipython) to permit the latest version.
- [Release notes](https://github.com/ipython/ipython/releases)
- [Commits](ipython/ipython@8.27.0...8.31.0)

---
updated-dependencies:
- dependency-name: ipython
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

requirements.txt

@@ -1,5 +1,5 @@
 astropy>=6.1.2,<7.1.0
-ipython>=8.27.0,<8.31.0
+ipython>=8.27.0,<8.32.0
 matplotlib>=3.9.1,<3.10.0
 numpy>=2.1.0,<2.3.0
 photutils>=1.13.0,<2.1.0