Backport PR #49320 on branch 1.5.x ((📚) update docs to mention 3.11 support) (#49440)

Backport PR #49320: (📚) update docs to mention 3.11 support

Author: KotlinIsland

doc/source/getting_started/install.rst

@@ -20,7 +20,7 @@ Instructions for installing from source,
 Python version support
 ----------------------
 
-Officially Python 3.8, 3.9 and 3.10.
+Officially Python 3.8, 3.9, 3.10 and 3.11.
 
 Installing pandas
 -----------------

pyproject.toml

@@ -5,7 +5,7 @@ requires = [
     "setuptools>=51.0.0",
     "wheel",
     "Cython>=0.29.32,<3",  # Note: sync with setup.py, environment.yml and asv.conf.json
-    "oldest-supported-numpy>=0.10"
+    "oldest-supported-numpy>=2022.8.16"
 ]
 # uncomment to enable pep517 after versioneer problem is fixed.
 # https://github.com/python-versioneer/python-versioneer/issues/193

setup.cfg

@@ -22,6 +22,7 @@ classifiers =
     Programming Language :: Python :: 3.8
     Programming Language :: Python :: 3.9
     Programming Language :: Python :: 3.10
+    Programming Language :: Python :: 3.11
     Topic :: Scientific/Engineering
 project_urls =
     Bug Tracker = https://github.com/pandas-dev/pandas/issues
@@ -33,6 +34,7 @@ packages = find:
 install_requires =
     numpy>=1.20.3; python_version<'3.10'
     numpy>=1.21.0; python_version>='3.10'
+    numpy>=1.23.2; python_version>='3.11'
     python-dateutil>=2.8.1
     pytz>=2020.1
 python_requires = >=3.8