Add tzdata as dev dependency; move dev deps to pyproject.toml (#1159)

Co-authored-by: Tomas R. <tomas.roun8@gmail.com>
Co-authored-by: Aarni Koskela <akx@iki.fi>

Author: 3 people

setup.py

@@ -69,9 +69,14 @@ def run(self):
     ],
     extras_require={
         'dev': [
-            'pytest>=6.0',
-            'pytest-cov',
+            "tzdata;sys_platform == 'win32'",
+            'backports.zoneinfo; python_version<"3.9"',
             'freezegun~=1.0',
+            'jinja2>=3.0',
+            'pytest-cov',
+            'pytest>=6.0',
+            'pytz',
+            'setuptools',
         ],
     },
     cmdclass={'import_cldr': import_cldr},

tox.ini

@@ -10,13 +10,7 @@ envlist =
 [testenv]
 extras =
     dev
-deps =
-    {env:BABEL_TOX_EXTRA_DEPS:}
-    backports.zoneinfo;python_version<"3.9"
-    tzdata;sys_platform == 'win32'
-    pytz: pytz
-    setuptools: setuptools
-    jinja: jinja2>=3.0
+deps = {env:BABEL_TOX_EXTRA_DEPS:}
 allowlist_externals = make
 commands = make clean-cldr test
 setenv =