sagemathgh-41034: bump (tex)info to the the latest version, 7.2
    
very new compilers such as gcc 15 don't grok our meanwhile old info
package, thus we do a bump


### 📝 Checklist

<!-- Put an `x` in all the boxes that apply. -->

- [ ] The title is concise and informative.
- [ ] The description explains in detail what this PR is about.
- [ ] I have linked a relevant issue or discussion.
- [ ] I have created tests covering the changes.
- [ ] I have updated the documentation and checked the documentation
preview.

### ⌛ Dependencies

<!-- List all open PRs that this PR logically depends on. For example,
-->
<!-- - sagemath#12345: short description why this is a dependency -->
<!-- - sagemath#34567: ... -->
    
URL: sagemath#41034
Reported by: Dima Pasechnik
Reviewer(s): Chenxin Zhong

Author: Release Manager

build/pkgs/info/checksums.ini

@@ -1,4 +1,4 @@
 tarball=texinfo-VERSION.tar.xz
 sha1=5919468ec9ca3bed5ad030a201cd5804b4f16edc
 sha256=0329d7788fbef113fa82cb80889ca197a344ce0df7646fe000974c5d714363a6
-upstream_url=https://ftp.gnu.org/gnu/texinfo/texinfo-VERSION.tar.xz
+upstream_url=https://ftpmirror.gnu.org/gnu/texinfo/texinfo-VERSION.tar.xz