MNT: Update minimum Python and build requirements

Author: effigies

pyproject.toml

@@ -4,10 +4,10 @@ requires = [
   "setuptools_scm[toml]>=6.2",
   "cython",
   # Newer than NEP29-minimum: compile against oldest numpy available
-  "numpy==1.24; python_version >= '3.11'",
-  "numpy==1.22; python_version >= '3.10' and python_version < '3.11'",
-  # NEP29-minimum as of Jan 31, 2023
-  "numpy==1.21; python_version >= '3.7' and python_version < '3.10'",
+  "numpy==1.26b1; python_version >= '3.12rc1'",
+  "numpy==1.24; python_version >= '3.11' and python_version < '3.12.dev0'",
+  # NEP29-minimum as of Aug 17, 2023
+  "numpy==1.22; python_version >= '3.8' and python_version < '3.11'",
 ]
 build-backend = "setuptools.build_meta"
 
@@ -17,7 +17,7 @@ dynamic = ["version"]
 description = "Nitime: timeseries analysis for neuroscience data"
 readme = "README.txt"
 license = { file = "LICENSE" }
-requires-python = ">=3.7"
+requires-python = ">=3.8"
 authors = [
     { name = "Nitime developers", email = "[email protected]" },
 ]