update arch testing to python 3.12.7 (#19223)

.github/workflows/test-install-scripts.yml

@@ -214,7 +214,7 @@ jobs:
           # The behavior we follow in install.sh is unique with Arch in that
           # we leave it to the user to install the appropriate version of python,
           # so we need to install python here in order for the test to succeed.
-          pacman --noconfirm -U --needed https://archive.archlinux.org/packages/p/python/python-3.11.8-1-x86_64.pkg.tar.zst
+          pacman --noconfirm -U --needed https://archive.archlinux.org/packages/p/python/python-3.12.7-1-x86_64.pkg.tar.zst
 
       - name: Prepare Debian
         if: ${{ matrix.distribution.type == 'debian' }}