gh-36869: m4/pyproject_toml_metadata.m4: Allow Python 3.12

    
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We allow Python 3.12 in the distribution packages of the Sage library,
based on the downstream reports by @tornaria and @kiwifb

After parts of this was done in other PRs in the meantime, this amounts
to adding the missing classifier
`Programming Language :: Python :: 3.12` in a bunch of files, including
`m4/pyproject_toml_metadata.m4`.


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URL: #36869
Reported by: Matthias Köppe
Reviewer(s):

m4/pyproject_toml_metadata.m4

@@ -13,6 +13,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Scientific/Engineering :: Mathematics",
 ]

m4/setup_cfg_metadata.m4

@@ -16,5 +16,6 @@ classifiers =
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
     Programming Language :: Python :: 3.11
+    Programming Language :: Python :: 3.12
     Programming Language :: Python :: Implementation :: CPython
     Topic :: Scientific/Engineering :: Mathematics

pkgs/sage-docbuild/pyproject.toml

@@ -18,6 +18,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Scientific/Engineering :: Mathematics",
 ]

pkgs/sage-setup/pyproject.toml

@@ -18,6 +18,7 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: Implementation :: CPython",
     "Topic :: Scientific/Engineering :: Mathematics",
 ]