Change PyPI Beta labels to stable

Author: Radonirinaunimi

pineappl_cli/pyproject.toml

@@ -6,7 +6,7 @@ build-backend = "maturin"
 name = "pineappl-cli"
 requires-python = ">=3.7"
 classifiers = [
-  "Development Status :: 4 - Beta",
+  "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Science/Research",
   "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
   "Natural Language :: English",

pineappl_py/pyproject.toml

@@ -9,7 +9,7 @@ name = "pineappl"
 # Python version that we support
 requires-python = ">=3.7"
 classifiers = [
-  "Development Status :: 4 - Beta",
+  "Development Status :: 5 - Production/Stable",
   "Intended Audience :: Science/Research",
   "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)",
   "Natural Language :: English",