announce the NumPy 1.25.1 release (#651)

In it goes! Thank you, @charris!

Author: charris

content/en/news.md

@@ -318,6 +318,7 @@ Here is a list of NumPy releases, with links to release notes. Bugfix
 releases (only the `z` changes in the `x.y.z` version number) have no new
 features; minor releases (the `y` increases) do.
 
+- NumPy 1.25.1 ([release notes](https://github.com/numpy/numpy/releases/tag/v1.25.1)) -- _8 Jul 2023_.
 - NumPy 1.24.4 ([release notes](https://github.com/numpy/numpy/releases/tag/v1.24.4)) -- _26 Jun 2023_.
 - NumPy 1.25.0 ([release notes](https://github.com/numpy/numpy/releases/tag/v1.25.0)) -- _17 Jun 2023_.
 - NumPy 1.24.3 ([release notes](https://github.com/numpy/numpy/releases/tag/v1.24.3)) -- _22 Apr 2023_.