chore: bump gunicorn version to ~21 (#1199)

CHANGELOG.md

@@ -1,5 +1,13 @@
 # Changelog
 
+## 41.2.0 [#1199](https://github.com/openfisca/openfisca-core/pull/1199)
+
+#### Technical changes
+
+- Fix `openfisca-core` Web API error triggered by `Gunicorn` < 22.0.
+  - Bump `Gunicorn` major revision to fix error on Web API.
+    Source: https://github.com/benoitc/gunicorn/issues/2564
+
 ### 41.1.2 [#1192](https://github.com/openfisca/openfisca-core/pull/1192)
 
 #### Technical changes
@@ -12,7 +20,7 @@
 
 - Skip type-checking tasks
   - Before their definition was commented out but still run with `make test`
-  - Now they're skipped but not commented, which is needed to fix the 
+  - Now they're skipped but not commented, which is needed to fix the
     underlying issues
 
 ##  41.1.0 [#1195](https://github.com/openfisca/openfisca-core/pull/1195)

setup.py

@@ -43,7 +43,7 @@
 api_requirements = [
     "Flask >=2.2.3, < 3.0",
     "Flask-Cors >=3.0.10, < 4.0",
-    "gunicorn >=20.1.0, < 21.0",
+    "gunicorn >=21.0, < 22.0",
     "Werkzeug >=2.2.3, < 3.0",
 ]
 
@@ -67,7 +67,7 @@
 
 setup(
     name="OpenFisca-Core",
-    version="41.1.2",
+    version="41.2.0",
     author="OpenFisca Team",
     author_email="[email protected]",
     classifiers=[